IPhone Use and Repair - The Ultimate guide

Screen aspect

1. Display screen suddenly goes dark.

There are two reasons why displays go dark:


The first is to enable the “automatic brightness adjustment” function, depending on the environment will become darker or brighter, you can manage this function in the iPhone “Settings” – “Accessibility” – “Display and text size”.


Second, due to high temperature, equipment overheating may also appear dark or even black screen problems. When the screen suddenly darkens, it is necessary to pay attention to whether the device is overheated. At this time, the device should be suspended, put aside and wait for it to cool down before viewing or using.

2. Display screen has a yellowish tint.

When you turn on the iPhone’s “True Tone” feature, the screen automatically adjusts to ambient light, making the image appear more natural and perhaps a little warmer. If you notice your iPhone’s colors getting warmer or more yellowish, you may have turned on the ‘Night’ mode, which sets the display to a warmer color to reduce eye irritation and is suitable for use in dark or low-light environments. You can turn it off by heading to iPhone Settings – Display & Brightness.

3. Display screen or icons are too large.

If the icons or images on the display screen are too large, it is usually because the “Zoom” feature has been accidentally activated. To zoom out, lightly tap the screen with three fingers twice.


If you need to turn off the Zoom feature, go to “Settings” > “Accessibility” > “Zoom,” and then tap to turn off “Zoom.”

4. Display screen color distortion.

If the color on the iPhone display screen is distorted, you may need to adjust the color filters:


Open “Settings” > “Accessibility” > “Display & Text Size”, and turn off “Classic Invert” or “Smart Invert,” or adjust the “Color Filters” as needed.


In addition, if the iPhone screen has liquid damage, abnormal spots, bright vertical stripes, or a dark and gray area, it is a hardware problem with the screen and needs to be sent for repair promptly.

5. Display screen touch malfunction.

  1. Force Shutdown: Press and hold the Power button and Home button simultaneously until the screen goes black, and then release the Home button. The white Apple logo will appear a few seconds later, but do not release the Power button until the screen turns off to complete the shutdown.

  2. Force Restart: Press and hold both the Power button and Home button for a few seconds until the white Apple logo appears on the screen, then release the buttons. The iPhone will automatically restart.

  3. Do not place the iPhone on speakers or magnetic screws. The capacitive screen near the electromagnetic field will malfunction.

  4. Sometimes, when the weather is particularly cold or your fingers are dry, the iPhone may experience touch screen malfunctions. Please use it in a suitable temperature environment and avoid overly wet or dry fingers when touching the screen.

  5. Do not place the iPhone in a high-temperature environment, as this may cause touch screen malfunctions when the temperature reaches around 40 degrees Celsius.

  6. It is also possible that your iPhone screen is damaged due to a previous fall, and you may need to seek help from Apple’s retail store staff. The iPhone uses a capacitive screen, which has the disadvantage of having positioning function barriers. Changes in environmental temperature, humidity, or electric fields may cause screen problems and inaccuracies.

6. Vertical stripes appear on the screen of the Apple phone

The common causes of vertical stripes on an Apple phone screen are:

  1) cable malfunction

  2) hardware issue with the screen, and

  3) system version bug. It is recommended to restore the system version to fix the bug issue. However, there may be other false causes as well.

To troubleshoot this issue, the first step is to determine whether a non-original screen has been replaced, and it is recommended to replace it with an original screen. This is because the most common cause of the problem is due to screen issues. Sometimes it may also be due to software issues, such as system confusion caused by installing too many things. It is recommended to back up important data on the phone and restore it to factory settings. If the problem persists, it may be a hardware issue with the display screen or ribbon cable. The most severe issue is the mainboard problem, which is the core component of the device. Once a fault occurs, it will definitely affect normal use.

  1. Restart the device: press and hold the power button and the Home button until the device restarts.
  2. Check the cable connection: open the device and check if the cable connection is loose or damaged.
  3. Screen hardware issues: it may be damaged due to collision, or due to screen quality issues.
  4. System version issues: it is recommended to restore the system version or update to the latest version to fix software bugs.
  5. Restore to factory settings: if none of the above methods work, try restoring the device to its factory settings, but remember to back up your data.

Apple’s repair services are now very comprehensive. If you can’t troubleshoot the problem yourself, you can make an appointment for repair.

7. iPhone screen has a black spot

  1. If an iPhone screen has a black spot after impact, it is caused by damage to the screen’s liquid crystal pixel particles due to the impact, resulting in a bad spot. This cannot be repaired, and the only solution is to replace the iPhone screen. However, if the black spot is small or does not affect use, it can be left as is without affecting touch functionality. For more information, refer to the article “The Difference Between the Display and Touch Layers of a Mobile Phone Screen.”
  2. It is possible that external pressure caused the screen to have a black spot and a “leaking liquid” phenomenon, which could be caused by human damage. According to Apple’s after-sales regulations, if the phone is damaged due to human causes, the repair must be paid for out-of-pocket. 80% of cases where a black spot appears on the screen are caused by human factors, but the specific reason can only be determined after inspection.
  3. Software repair: try using screen repair software like JScreenFix to solve the problem. These software programs can display colorful animations on the screen to repair bad spots.
  4. If hard objects such as keys are placed with the phone during use, surface wear can occur, resulting in cracks and dirt that can be wiped clean with a cleaning solution. If it is a crack, minor cracks that do not affect usage can be left untreated, but if the crack is large, replacement should be considered.

Battery aspect

1. Iphones drain power fast

Check the battery health status

First, check the battery health status by going to Settings – Battery – Battery Health.

In this interface, iPhone displays information about battery capacity, peak performance, and whether the battery needs to be serviced.

If the maximum capacity of the iPhone battery is less than 80%, or maintenance information such as “Battery health status deteriorated” or “Battery health status unknown” appears, you may consider replacing the battery for a better battery life experience.


Problem-solving software

Pay attention to frequent battery drain and shutdown issues. When performing certain operations on your iPhone, such as playing games that require high performance or resetting your device after upgrading or restoring data from a backup, your iPhone’s battery may consume more power than usual. Wait until the settings or backup is complete and then observe the iPhone’s power consumption.

In addition, incompatible software on the device can also cause faster power consumption. You can go to iPhone Settings – Battery, and check the power consumption of each app. If there are unused apps that have been running in the background for a long time, you can try turning off background app refresh in iPhone – General – Background App Refresh, or update the app.

If the problem still persists, then repair may be needed. If frequent power outages and shutdown issues occur, and restarting the device or updating the system does not solve the problem, it may be a hardware problem with the device. You should send the device to an official Apple after-sales service department for repair as soon as possible.

2. iPhone charging slowly

Smartphones are one of the most widely used external devices today, but due to their limited capacity, many iPhones face the problem of needing to be charged frequently. Here are five tips to help you speed up your iPhone charging:


  1. Use an iPad charger to charge your iPhone

    If you have both an iPhone and an iPad, you can use the iPad charger to charge your iPhone in an emergency situation, which can significantly increase the charging speed. However, frequent use may damage the battery.

  2. Turn on airplane mode while charging

    If you are not in a hurry, you can turn on airplane mode on your phone while charging, which can improve the charging speed to some extent. Similar to charging in airplane mode, turning off your phone can reduce power consumption from other programs, and can result in faster charging. But don’t frequently turn on and off your phone to check the charging progress.

  3. Use an Apple-certified charging cable and power adapter

    Using an Apple-certified charging cable and power adapter can ensure the safety and effectiveness of charging, and avoid damage to the battery or even the phone.

  4. Charge in a relatively warm environment

    The optimal temperature range for iPhone use and charging is 10°C to 35°C. If the charging environment is too cold or too hot, you can choose a more suitable temperature to charge, which can also speed up the charging process.

  5. Clean the charging port

    If you frequently encounter slow charging or inability to charge even after replacing the charging cable and battery, you may need to check if the charging port is blocked by some dirt. You can use a brush or a toothpick to carefully clean the dust or dirt, but be careful not to damage the charging port. Many iPhones that cannot charge properly are due to this reason.

3. iPhone cannot be charged properly

  1. Excessive battery wear, causing complete damage

    Generally, this situation is relatively rare. You can first check the battery health by going to Settings – Battery – Battery Health and Charging – Maximum Capacity. The displayed value is the battery health. For a normally used iPhone, the battery health should be above 85% within one year and above 75% within two years. But if your battery health drops below 80% within a year, there are only two possibilities: either you bought a fake product or you frequently engaged in actions that damage the battery. I have seen people who play games and charge their phones almost every day, and as a result, the battery health dropped to 78% in less than half a year.

  2. Battery management IC damage

    This situation is mostly caused by the main board components becoming detached due to the phone falling on the ground, which is very rare. If you can’t charge your phone and the reason is said to be the main board damage, small stores may charge a lot of so-called main board replacement fees, but actually only replacing the power IC is enough, which is only one-fifth of the price of replacing the main board.

  3. Non-original charger or damaged charging cable

    This one is simple. Just try using an original iPhone charger and charging cable to see if it works.

  4. Phone system failure

    Press and hold the power button and home button at the same time until the Apple logo appears to force restart the iPhone. Restarting can solve 70% of phone problems. If there is a problem, try restarting first. It should solve the problem. If not, it is recommended to seek professional help to troubleshoot the problem.

  5. Charging port interface oxidation or dirt

    The charging port at the bottom of the phone is prone to dust accumulation, and the interface between the port and the power cord plug is prone to poor contact. So if your phone cannot be charged, use the SIM card ejector pin that comes with the iPhone to scrape off the oxidation on the charging port interface as much as possible (generally, this problem only occurs in old iPhones that have been used for 1-2 years or more).

  6. Temperature problem, too high or too low can make charging difficult

    Due to the physical characteristics of the battery, it is particularly sensitive to temperature. If the temperature is too high, there will be problems, and if it is too low, the battery will not charge. If the temperature in your location is too low, please put your phone in a blanket or an air-conditioned room to bring it to a normal temperature before charging it.


    Normal charging time of iPhone

    Under normal circumstances, it takes 4-5 hours for an iPhone to fully charge. It is recommended to use the original charging adapter. In case of emergency, using an iPad charging adapter can significantly shorten the charging time.


          iPhone Charging Precautions

  1. It is not necessary to charge your iPhone for 12 hours during the first charge. It is sufficient to charge it to full, but remember to charge it when the screen shows 10% for the first time, and avoid using up all the battery.
  2. After the first charge, you can charge your iPhone at any battery level, and it is not necessary to wait until the battery is low.
  3. It is recommended to fully charge and discharge your iPhone at least once a week. If you cannot do it every week, make sure your iPhone goes through at least one charging cycle per month to extend the battery life.
  4. Although the iPhone has overcharge protection, it is still recommended to avoid charging it for too long, especially overnight. Charging for too long will greatly shorten the battery life.

4. How to Make your phone battery last Longer

  1. Choose the right charger.

    Use an authentic Apple charger whenever possible to maintain the battery’s performance.
  2. Turn off location services.

    When driving or using GPS for navigation, you may find that your phone’s battery drains quickly, and even overheats. GPS is a major battery drainer, and many apps require location services, but we can reject these apps during installation or only turn them on when needed. Most of the time, we don’t need GPS, so we can turn it off and only turn it on when necessary.
  3. Close unnecessary background running apps.

    There are many rogue apps that work in the background even when we’re not using them, which consume energy. Except for the essential communication and necessary apps, we can let them rest when they are not in use, turn off their network connection, and prevent them from refreshing in the background.
  4. Moderately dim the phone screen.

    After the iOS 13 system update, the Dark Mode was introduced, which is turned on by default after sunset. This function can reduce the power consumption of the screen in low light conditions and save a lot of power.
  5. Use Low Power Mode.

    When your phone is low on battery and you can’t charge it for a short time, you can turn on Low Power Mode. This will reduce or stop unnecessary apps from running, extend the standby time of your phone, and prevent you from missing important information.
  6. Put the phone face down.

    Currently, when you place your iPhone face down, the screen will not automatically light up when receiving notifications or messages, which can also save battery life. However, if there are important messages, it is recommended to turn on the notification.
  7. Turn off True Tone Display.

    iPhone 8 and later models have a True Tone Display function, which automatically adjusts the screen brightness and color saturation according to the environmental impact to protect the eyes. It’s amazing! However, it consumes a lot of power. When you need to save power, you can turn off this function.
  8. Turn off Wi-Fi, Bluetooth, etc.

    Wi-Fi, Bluetooth, and other functions also consume a lot of power. When we’re not using Wi-Fi or Bluetooth, we can turn them off, which is a matter of habit and can also save power.

5. iPhone battery heats up

Smartphones are similar to computers in that their CPU generates heat during operation, but unlike computers, smartphones do not have cooling systems such as heat pipes. Instead, they rely on their outer shell to dissipate heat. Therefore, it is normal for the phone’s outer shell to become warm during use. However, if the phone becomes too hot, it should be taken seriously.

Febrile cause

A smartphone’s SoC (system-on-chip) integrates various components, including:

  • GPU (graphics processing unit): a microprocessor that performs graphic computations, serving as an efficient integrated graphics processing center. The GPU is heavily used in gaming for 3D rendering, but it also helps with performance analysis, deep learning, and machine learning algorithms.

  • NPU (neural network engine): a processor specifically designed to handle large amounts of neural network algorithms and machine learning data. It can automatically predict user behavior, optimize photo imaging quality after taking pictures, and simulate depth of field effects, all of which are processed by the NPU.

  • IMC (memory controller): used to manage data entering and exiting memory.

  • ISP (image signal processor): used to process output data from the image sensor, providing DSLR-like photography quality and optimization.

  • SEP (secure enclave processor): a secure integrated circuit system with a complete operating system (SEPOS), with its own kernel, driver, service, and application programs. It can isolate hardware design to prevent hackers from stealing sensitive data. Since the iPhone 5s series, Apple has used this chip specifically to handle sensitive data, such as Touch ID, Face ID (biometric recognition), and Apple Pay.

Other components include display engines, storage controllers, HEVC decoders and encoders, and more.

With so many components integrated into one SoC, it’s no surprise that it generates heat when operating. For example, when playing mobile games, many players increase the graphic quality and enable high frame rate mode for a smoother experience and better visual effects, which increases the SoC’s workload and causes it to heat up. This is especially true for phones with double-layered motherboards, such as the iPhone X and XS series, which have limited internal space and no cooling fans like computers, relying solely on back panel heat dissipation, resulting in lower efficiency.

Cooling technique

  1. When charging your phone, it should be placed in a well-ventilated and cool area. It is important to avoid using the phone, especially for activities such as gaming or watching videos, as this can cause overheating and damage to the battery, leading to premature aging. Therefore, it is necessary to pay attention to phone battery maintenance on a regular basis.

  2. If your phone becomes too hot, it is recommended to shut it down and let it cool off before using it again. It is not advisable to use cold methods to cool down the phone as this may cause condensation to form inside the phone and damage the motherboard and electronic components. As for liquid cooling, it is also not recommended, even though many phones are now waterproof, as any damage caused by users immersing their phones in water will not be covered by Apple’s after-sales service.

  3. For those who like to talk on the phone for long periods of time, it is recommended to use headphones to avoid prolonged contact with the cheeks while talking.

  4. Close unnecessary background processes.

  5. Avoid using a phone case that is too tight or thick.

  6. Avoid excessive use of your phone in areas with poor signal.

  7. If the phone has been overheating since it was last rooted, it is recommended to root it again.

iPhone camera aspect

1. iPhone camera app crashes during use

Possible reasons for iPhone camera app crashing:

  1. Hardware issues: camera hardware malfunction or damage to camera sensor may cause camera app to crash.
  2. Software issues: outdated operating system version or installation of unstable third-party applications may lead to camera app crashes.
  3. Software conflicts: having multiple camera apps or other conflicting apps on the phone can also cause camera app crashes.
  4. Storage issues: insufficient phone memory or storage space may result in camera app crashes.
  5. Settings issues: incorrect or incomplete option or permission settings in the phone’s settings may also lead to camera app crashes.


  1. Check if the phone memory is full. If it is, free up some space, turn off the phone, and restart it after a minute to see if the problem is solved.
  2. If the problem persists, click on “Settings” and select “Camera” from the list. Adjust camera resolution, filters and other settings, and try again.
  3. Download other camera applications from the App Store to troubleshoot if it is a system camera malfunction.
  4. If the issue persists, back up the phone data and restore the phone system settings.
  5. If none of the above steps solve the problem, bring the phone and the relevant purchase credentials to the designated after-sales service for inspection and repair.

2. iPhone camera showing a black screen when taking photos

Causes of iPhone camera black screen issue:

  1. Common issues with the ribbon cable;
  2. Insufficient memory or storage space on the device;
  3. Hardware malfunctions of the camera or damage to the camera sensor;
  4. Outdated operating system or installation of unstable third-party applications;
  5. It may also be caused by the app not having proper access to the camera.

Solution for iPhone Camera Showing Black Screen:

  1. Close the camera app in the background and reopen it again.
  2. Check if any other apps are using the camera, as some apps may occupy the camera resources and cause the camera to malfunction.
  3. Update the iOS system and camera app to the latest version as it may fix some known issues and bugs.
  4. Open the settings app and select Privacy. Then choose Camera and enable camera access for the app you want to use the camera with.
  5. If the above methods don’t work, try restoring your iPhone to its factory settings. If none of the above methods can solve the problem, it may be a hardware issue with your phone. You can take it to the nearest Apple service center for repair.

iPhone earpiece

1. How to deal with a small water droplet in the iPhone’s earpiece?

Although the new iPhone has added waterproof function, the earpiece is still the most fragile part of the phone due to the small gaps. If water accidentally splashes into the iPhone earpiece, it may become noisy. So what should you do if the iPhone earpiece gets wet? Let’s take a look at the waterproof function introduced when the Apple Watch Series 2 was released. When the watch is taken out of the water, it plays high-frequency audio to expel the water from the watch speaker and ensure normal sound. This is the official waterproof method for the watch, and now our phones have it too. This is where Sonic comes in, providing a similar function for our iPhones. The software is simple and easy to use. When your iPhone XR earpiece gets wet, just open Sonic and adjust the sound frequency to between 145-165 Hz, and you will see the water droplets “shaken” out of the earpiece. You can adjust the vibration frequency by sliding the screen up and down in the software. 

Tips to solve the problem of water entering the iPhone handset:

  1. Use a clean, soft-bristled toothbrush to gently brush the metal mesh on the earpiece. After a few times, it should be back to normal.
  2. If it’s not dry, wrap the area around the earpiece with a small vacuum cleaner or hairdryer and blow it dry.
  3. Place the iPhone in a ventilated place to avoid water residue.
  4. Wait for 24 hours to let the water evaporate completely.
  5. Restart the iPhone and test whether the earpiece is working properly.

2. How to deal with low iphone speaker sound?

1.The holes of the phone speaker may become clogged with dust or dirt, causing the sound to become quieter.

For experienced users, they know that the phone speaker has many small holes to help the sound spread out better. However, dust can enter the phone speaker over time and even block these small holes. The principle is the same as cleaning a computer from dust. When dust enters the speaker, it can also affect the sound.


Solution: Disassemble and clean the dust. Remove the back cover, unscrew the screws, remove the inside cover, tear off the dust-proof net inside the speaker and microphone, clean it, and then reassemble it. The sound will be much louder. Of course, this requires some experience.


For inexperienced users, they can use a small brush, a toothbrush, or a specialized phone cleaning tool if available to gently sweep the inside of the speaker and remove the dust attached to the inside. It is recommended to clean it regularly.

2.The speaker itself is damaged.

With smartphones becoming thinner and more fragile, a drop could result in a cracked screen. However, when all of our attention is focused on the screen, the phone speaker may also be unintentionally damaged, as the speaker is usually located where the phone hits the ground.

Solution: If it is the coil and permanent magnet inside the speaker that are in contact with each other, preventing the coil from vibrating, and causing no sound or weak sound, the speaker needs to be replaced. It could also be that the pad between the speaker and the motherboard is not well connected, in which case, removing the speaker and reinstalling it should do the trick.

3.The phone system or software has problems.

When our phone downloads some rogue software, these software will automatically bind to our phone system, causing the phone to malfunction and the hardware to have problems. The small sound from the speaker may also be due to incompatibility between our phone system and software, resulting in internal parameter errors.

Solution: Try restarting the iPhone or updating the iOS system to the latest version to ensure there are no software problems. If it is a system problem, it is recommended to uninstall rogue software or restore the phone. Based on many similar repair cases, the phone system causing the speaker to have low volume and inability to work properly is quite common, and cleaning the phone usually restores it to normal.

4.Water damage to the phone speaker.

When the phone falls into water, it is easier to handle the external water, but water entering through the speaker hole can be challenging. The most troublesome thing is that the speaker is the first thing to be affected and damaged by water. After water enters the speaker, no sound can be heard no matter how loud the volume is.

Solution: When the phone falls into water, aim at the water entry point and shake the phone hard to shake out the water that has entered. Then, use a hairdryer to blow cool and hot air alternately at the phone speaker hole to dry the water inside the phone.

iPhone repair aspects

1. How to Find a Reputable Repair Shop for Damaged iPhones

First of all, if your iPhone is experiencing problems, do not attempt to repair it blindly without understanding the issue. If it is still under warranty, it is best to leave the repair to the professionals (note that water damage and damage caused by human factors are not covered by the warranty) to avoid unnecessary secondary damage to your phone. To ensure the best results, it is important to seek out a reputable Apple authorized service provider for iPhone repair.


Apple has two types of offline stores: self-operated stores, which are luxurious and high-end, and authorized dealers, which are located in some shopping malls. 


The service at self-operated stores is the best, and they are usually located in the most prosperous areas of the city, with large, exquisite glass facades. In addition to sales, self-operated stores are also responsible for after-sales service. If you have any problems with your device, simply make an appointment and bring your device and ID to the store. All replacement parts used are original, with almost no other issues except for the high price. You can check for appointments on the official website (https://support.apple.com/iphone/repair).


If there are no self-operated stores in your city, there should be designated repair centers, some of which may be located in office buildings. You can search for specific addresses and contact information on the Apple Repair and Service website (https://support.apple.com/repair/verify-repair-provider), or call the customer service hotline for assistance.


The last option is individual repair shops that are not official Apple offline stores. There are many of these shops, and it is recommended to find one that has been in business for a long time and has extensive experience in repairs (for example, HERMA works with many mobile phone repair shops in many countries. If you have difficulty finding a satisfactory repair shop, you can click to view our partnered stores. Of course, if you are running your own repair business, we are happy to cooperate with you, please contact us). They may have original parts, but most of them belong to the aftermarket and are repaired using mobile phone parts produced in China (such as HERMA, a professional mobile phone screen manufacturer from China). If you do not require original parts, or if your repair budget is limited, choosing an individual repair shop is the most cost-effective option. You can plan your repair budget accordingly and even get results that are comparable to, or sometimes better than, original parts in terms of user experience.

2. Repair tips for iPhone that you must know

  1. Warranty period of iPhone

    We all know that Apple products, such as iPhone, iPad, and Mac, have a one-year warranty period. However, the main components of iPad and Mac are covered by a two-year warranty period.

    The main components of iPad are: motherboard, memory, hard disk, display screen, and AC power adapter.

    Main components of Mac desktop: motherboard, CPU, memory, hard drive, power supply, and graphics card.

    Main components of Mac laptop: motherboard, CPU, memory, hard drive, power adapter, keyboard, and display screen.

  2. Warranty for phone accessories

    Phone accessories, such as headphones and data cables, also have a one-year warranty period when the main device is covered by the warranty. If there is a quality problem with the accessories, they can be replaced with new ones during the warranty period.

  3. Keep receipts

    The warranty period starts from the date of purchase, so it is important to keep relevant purchase receipts. The main receipts are the purchase invoice or warranty card.

  4. Replacement of phone accessories

    All parts, accessories, and equipment used for replacement are brand new. The screen assembly is a combination of screen, front camera, earpiece speaker, and home button.

  5. Maintenance guarantee

    The replaced parts and accessories enjoy the remaining duration of the original one-year warranty period, or a 90-day warranty period from the date of self-repair or replacement, whichever is longer.

In the event of a whole machine replacement (excluding accessories and headphones), the warranty period of the replaced product will be reset and the warranty period will be one year from the replacement date. However, if there are paid maintenance records or special replacement situations, the warranty period will not be reset. The reset warranty period may not be found on the Apple official website.

other aspects

1. How to Avoid iPhone Shutdowns Due to Low Temperature

What causes an iPhone to shut down automatically in cold weather? Just as we dress warmly to stay comfortable, our phones also need protection from the cold to avoid the risk of forced shutdowns. Unexpected shutdowns can damage the phone and create problems. To prevent this from happening, here are some practical tips:


Firstly, the issue might be related to the lithium battery in the phone. If the battery is low in power, it can cause the phone to shut down due to weak electrical currents. To avoid this, it is important to protect the battery by not playing games while charging the phone or by unplugging it after it’s fully charged.


To prevent shutdowns in cold weather, here are some helpful tips:

  1. Avoid exposing your phone to low temperatures as much as possible, by not leaving it outside or in cold storage.

  2. Keep the battery charged: In low temperatures, the battery’s activity is weaker and drains faster. If the battery level is low, the phone is more likely to shut down. So, keep your phone charged at all times, and charge it at room temperature if possible.

  3. Close unnecessary applications and features: In low temperatures, the phone can be more sensitive, so it’s better to turn off unneeded applications and features such as Wi-Fi, Bluetooth, and location services to reduce power consumption and heat generation.

  4. Use a phone case: A phone case can provide warmth to the phone and prevent the cold from affecting the battery. Furry phone cases are particularly popular in winter.

  5. Avoid frequent use: Using the phone frequently, especially for high-performance tasks such as gaming and video playback, can cause the phone to heat up, accelerate battery drain, and increase the likelihood of shutdowns.

  6. Turn off automatic brightness adjustment: Automatic brightness adjustment can make the screen dimmer in cold temperatures, affecting user experience. It’s better to turn off this function and adjust the brightness manually.

  7. If the phone shuts down in cold temperatures, don’t turn it back on immediately, as this can harm the battery. Instead, move it indoors and let it return to normal temperature before turning it on.

  8. Avoid sudden temperature changes: When taking the phone out of a low-temperature environment, don’t put it immediately in a high-temperature environment, as this can cause sudden temperature changes that can damage the battery.

  9. Use a hand warmer or heater: Placing the phone on a hand warmer or heater can keep it warm and increase the battery life.

  10. Keep your system and applications up to date: Updating the system and applications can improve stability and fix some unstable problems, such as automatic shutdowns due to low temperatures.


Finally, if the phone shuts down and causes data loss, you can recover the lost data using professional phone data recovery software.

2. iPhone insufficient memory/phone lag

Insufficient memory is one of the reasons for slow performance and lag on your phone, especially when running multiple apps and games. The CPU response speed is slow, which makes the phone lag easily.



1. Install antivirus software and clean up viruses and junk files to free up memory space. However, it is important to note that some “cleaning” applications may have negative effects. They may mistakenly delete important files, and some apps may automatically recreate junk files after deletion. Therefore, it is recommended to use reliable antivirus and cleaning apps, and pay attention to the value of the files when cleaning.


2. Go to system settings – app management – running, and force quit the program processes still running in the background after exiting, and clear the cache data of the program processes. However, this is only a temporary solution and should be used as needed.


3. Go to system settings – phone apps – installed, and uninstall or move third-party apps that are not frequently used or consume a lot of memory. You can back up some data to other places, such as a computer or other storage media.


4. Learn to use cloud storage on your phone to store data in the cloud and free up storage space on your phone. However, uploading and downloading data may require using data traffic, so try to avoid additional charges.


5. When all memory release methods fail to work and the phone still prompts insufficient memory, immediately back up files, and then reset to factory settings. This may be the last solution, but it will delete all data and apps, so be sure to back up important data and files and ensure that all apps can be re-downloaded and installed.


6. Although it may seem excessive to turn off Siri, for most ordinary users, Siri’s role is not significant. Turning off Siri can significantly improve overall speed, including typing speed on the keyboard.


7. The background refresh function of applications can also be turned off. This function is very power-consuming, and only keep it on for necessary apps, and turn it off for others.


8. Automatic screen brightness control is not necessary. Turn off auto-adjustment and set a suitable brightness level, not exceeding halfway on the slide line, and not too low either.


9. Turn off unnecessary push notifications in the notification center. For example, a video client sends me all kinds of notifications, most of which are invalid and interfere with me.


10. When charging, try not to use the computer to charge, and use the original data cable and plug, and charge with a home power source. If using a mobile power source, choose a good quality brand with a stable voltage.

11. Adjust phone wallpaper and theme, use simple and lightweight wallpaper and theme, and avoid using dynamic or high-definition wallpaper and theme, as they consume more memory and CPU resources.

3. Can iPhone be upgraded with additional memory?

Benefits of memory expansion:

  1. Obviously, with a larger internal memory after expansion, you can download more apps and solve the problem of having to delete things frequently.
  2. With sufficient running memory, your phone will also become smoother. Those who have experienced a lack of memory on their phone would know that it can slow down the device.
  3. After expanding the memory, you can update the iOS system fearlessly and use more features.


Disadvantages of expanding iPhone memory:

  1. Apple does not officially support internal memory expansion for iPhones, so you can only choose third-party repair shops. This could mean dealing with unreliable repair shops and having no guarantee on the quality of the parts.
  2. After the iPhone’s internal memory has been expanded, the official warranty will be voided, and there will be no security protection.
  3. Memory expansion may lead to instability in the iPhone during use. This is because the process involves writing a new serial number and attaching the expanded memory card. Heating of the iPhone’s motherboard during the process could affect its stability even with professional repair personnel.
  4. After memory expansion, the value of the phone will depreciate significantly, making it harder to sell. Additionally, Apple does not support official recycling of modified devices.


Should you expand iPhone memory?

  1. If you can guarantee that the phone will not need repairs, you can choose to expand the memory, or do it after the warranty period has passed.
  2. If you can guarantee that the repair shop’s sources are reliable, you can try it; otherwise, the reduced stability of the device may not be worth the cost.
  3. Expanding iPhone memory is somewhat of a luck-based process. While insufficient memory can be annoying, clearing the cache regularly and backing up photos can alleviate the problem. Regularly clearing the phone’s memory can also help.

4. iPhone can't connect to WiFi

1.Check if the WiFi password is correct.
First, make sure that the WiFi password you entered is correct by testing it on another device.


2.Forget and reconnect to WiFi.

Find the WiFi option in iPhone settings, click on the connected WiFi name, select “Forget This Network,” and then reconnect to the WiFi.


3.Remove the protective case.

Most people protect their iPhones by using a protective case. However, some third-party protective cases, especially metal ones, can interfere with WiFi signals, causing weaker signal strength. If your iPhone WiFi signal is poor, try removing the protective case to see if the signal improves.


4.Check if your home router is on and if the WiFi is working.

First, check if the router is on and make sure you are within the WiFi signal range. If you are too far away, you won’t be able to connect. Then, check if your phone’s WiFi is turned on. Go to “Settings” – “Wi-Fi” and make sure that Wi-Fi is turned on. Click on the WiFi name you want to connect to, and if the connection is successful, a blue checkmark will appear next to the WiFi name. If you see “Auto-Join Disabled” after clicking on the WiFi, you can enable “Auto-Join” in the WiFi settings. If your WiFi password has been changed, you may need to re-enter the correct password. If you still can’t connect after trying these methods, check if there are any problems with the WiFi. The Apple phone system can automatically detect WiFi problems. If there is a problem, “No Internet Connection” will appear under the WiFi.


5.Check if the WiFi cable and network connection are turned on.

If you still can’t connect to the network, check if the wireless network cable is faulty. Try using another phone to connect to the WiFi. If the problem persists, the WiFi cable may be faulty, and you should call your WiFi service provider for help. You can also try connecting to the WiFi from different locations. If you still can’t connect, try the following methods to resolve the issue.


6.Try restarting your iPhone and router.

If the above methods don’t work, try restarting your phone and WiFi router. If you’ve been using your router for a long time, it may freeze up. After restarting both devices, check if the issue has been resolved. Make sure that your router is up-to-date and can connect to your iPhone.


7.Try resetting the network settings on your iPhone.

You can also try resetting the network settings on your iPhone 11. Here’s how: go to “Settings” – “General” – scroll down to the bottom and click on “Reset” – select “Reset Network Settings.” Then, try reconnecting to your WiFi to see if you can connect.

5. iPhone has low/no sound when making calls

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.


Software issue:

When there is no sound during a phone call on an iPhone, first check the mute function to see if it is turned on. If that’s not the problem, go to the phone’s settings, click on “General,” and then click on “Reset.” In the reset menu, click on “Reset All Settings” to begin the process. If the sound doesn’t return after resetting, try restarting the phone.


Solution for complete silence during phone calls:

1. If there is no sound when answering a call on an iPhone, turn off headphone mode. This can be done by going to the Settings app from the home screen.

2. In the settings menu, scroll down to “Accessibility” and click on it.

3. In the Accessibility menu, click on the “Touch” option.

4. In the Touch menu, swipe up and click on the “Call Audio Routing” option.

5. Once in the “Call Audio Routing” menu, switch to the “Automatic” mode and turn off headphone mode to restore sound during phone calls.


Software conflict:

It may be that a recently downloaded third-party app is causing the low volume. Uninstall some of the most recently installed apps and then restart the phone.


Hardware issue:

When making a call, turn up the volume on the external volume buttons.

If the sound is still very low, it’s likely that the phone’s earpiece is broken.

If there is no sound when using the speakerphone or the volume is very low, it’s likely that the external speaker is broken.

If the other person can’t hear you during phone calls, it may be that the phone’s transmitter is broken.


System malfunction:

First, back up relevant data on the phone, then go to the phone’s settings and click on “Reset” to factory settings and try again.


If the above steps do not restore sound to your iPhone, you can contact professional iPhone repair personnel for assistance. If you can’t hear the other person during a normal call, check the contact points of the earpiece and front camera cable after disassembling the phone. If they are normal, replace the earpiece. If there are foreign objects or rust, clean them. If cleaning is not possible, replace the damaged parts. Usually, both the earpiece and front camera cable need to be replaced. If there is noise in the earpiece, try replacing it to solve the problem. If there is no sound during playback, such as when playing music, videos, or ringtones, try replacing the speaker. Replacement of parts only solves problems caused by the parts themselves.

6. Symptoms and treatment for an iPhone that has been exposed to moisture

Symptom 1: Decreased sensitivity, unresponsive buttons, intermittent signal during calls, and no signal in some enclosed rooms.

Cause: Moisture has entered the iPhone, causing the insulation of integrated circuit boards and other components to decrease, even leading to a semi-short circuit state. This reduces the coverage area of the receiving and transmitting signals, shortens the distance of communication, and causes communication interruptions.


Symptom 2: The screen is too dark to display images, and the iPhone cannot be turned on.

Cause: A large amount of water vapor has entered the circuit board, causing water droplets to form and short circuit or oxidize metal interfaces. If the charging port is oxidized, there is a risk of combustion during charging.

7. How to deal with an iPhone that fell into the water?

emergency handle:

1. After a phone falls into water, most users are likely to immediately take it out and avoid turning it on to prevent short circuits. This is also very important as reducing the contact time between the phone and water can minimize damage to the phone. The longer the phone is submerged in water, the more damage it can cause to the speakers, microphones, screen, and motherboard.

2. After taking the phone out of the water, immediately remove the phone case as it can trap moisture. Screen protectors can be left on unless there are obvious water bubbles. Use a absorbent towel to quickly wipe away visible water on the phone surface, paying special attention to the power button, volume keys, mute switch, speakers, microphones, and audio output jack. Try to remove all visible water droplets. Remember not to attempt to turn on the phone. Many users, after retrieving the phone from the water, instinctively press the power button to see if the phone can still be turned on. This is a big mistake. Even if the phone itself is not seriously damaged, turning it on may cause the screen to malfunction or burn out the motherboard.

3. Regardless of whether the phone was turned on before falling into the water, quickly remove the battery. Then, shake the phone with the side that has more openings or larger gaps to remove any remaining water. When shaking, hold the phone securely to avoid accidentally throwing it, otherwise you may have to buy a new phone.

  Here is an issue: currently, it is difficult for most people to open the back cover of their phone, and they have no experience in disassembling it. If the battery cannot be removed, there is no good solution. Typically, when a phone falls into water, it will black out. For those phones that cannot remove the battery, it is not recommended to try pressing the power button after blacking out. Instead, try shaking the phone to remove any water inside.

  However, it is not recommended to dismantle the phone to remove the battery. Firstly, disassembling the phone takes a long time, and by then the water has already come into contact with the battery, so it’s not very helpful. Secondly, although both water damage and unauthorized disassembly may void the warranty, unauthorized disassembly may cause more serious damage to the phone than water damage. Therefore, unless you are a professional or an expert in phone repair, it is best not to consider disassembling the phone.


4.Using a cotton swab to absorb any remaining water from the audio output jack and small gaps is worth trying. Pay special attention to the power button, volume buttons, mute switch, speaker, microphone, and audio output jack, and try to wipe away any visible water.

5.If your phone has been exposed to water, do not try to turn it on even if it wasn’t submerged for long. Wait at least 24 hours before attempting to power on the device. The priority at this point is to remove any residual moisture from inside the phone. Attempting to power it on before doing so could risk damaging the motherboard.

Many people think that using a hairdryer to dry out the phone is a good idea. However, there are certain precautions to be taken:

  1. Use a low-speed setting: The inside of the phone is complex and contains sensitive components. High-speed air may cause damage to these components. It is recommended to use a low-speed setting to dry the phone.

  2. Use cool air mode: When using a hairdryer to dry out the phone, it is recommended to use cool air mode. Hot air can damage the internal components of the phone, while cool air will not.

  3. Maintain a suitable distance: The distance between the hairdryer and the phone should be neither too close nor too far. It is recommended to maintain a distance of about 20 centimeters between the hairdryer’s nozzle and the phone, to prevent the phone from being exposed to high temperatures or hot air.

  4. Blow dry for a few minutes, then pause and shake the phone. Repeat this process 3-5 times, and the hairdryer should be used for no more than 20 minutes. After drying the phone, do not try to turn it on immediately. Since it is uncertain whether there is any remaining water inside the phone, it is recommended to use a phone-specific drying agent or to place the phone in a ventilated and dry area. Wait for the phone to dry completely before attempting to power it on again.

6.After confirming the phone is dried, then start charging it. If the phone displays a charging signal, such as an iPhone displaying “Charging,” then the phone may still be functioning properly. If the phone doesn’t display a charging signal, it means that the battery is not receiving any charge, which indicates a short circuit in the device. At this point, do not attempt to charge the phone as it will not be effective.

The consequences of an iPhone getting wet are as follows:

  1. If the water damage is not severe, the phone can still be used normally. However, serious damage may result in a distorted screen, black screen, or malfunctioning touch screen. Regardless of whether the phone appears to be functioning normally, there is still water inside that cannot easily evaporate.

  2. Even if the phone seems to be working properly, it is still compromised and may crash or even become unusable at any time. When water enters the circuitry of the motherboard, if it is not disassembled and cleaned with a special solution of cleaning water and ultrasonic waves, it will gradually oxidize and rust. After some time, if any of the corroded lines short-circuits, the entire motherboard will become irreparable. The longer you wait, the more likely it is that all the lines will be corroded beyond repair.

  3. Additionally, Apple does not cover water damage under warranty. Once an iPhone gets wet, certain indicators inside the phone turn red and Apple will refuse to repair it under warranty. It can only be repaired by a professional technician. The process of cleaning the phone is very cumbersome, and delicate internal components require special equipment for disassembly, cleaning, and drying. Many areas are difficult to access, and only a few large components are cleaned, leaving delicate components untouched. Moreover, most repair shops do not have ultrasonic equipment to remove water. Therefore, it is essential to take the iPhone to an Apple service center for disassembly and cleaning as soon as possible. The key is to repair it promptly because the longer you wait, the greater the likelihood that the water will corrode the components beyond repair and render the phone useless.


8.How to deal with no signal on an iPhone

  1. Restart the phone or toggle the airplane mode on and off. To toggle airplane mode on and off, either swipe down from the top of the main screen or go to Settings > Airplane Mode. Wait about 10 seconds after turning it on before turning it off again. This often resolves the issue.
  2. Check the SIM card. If it’s loose, remove it and reinsert it. If the issue persists, try a different SIM card. However, since the iPhone SE supports eSIM, this step may not be necessary if you’re using eSIM.
  3. Manually select a carrier. By default, the iPhone automatically selects the carrier with the strongest signal. However, if you’re in an area with poor signal, turn off automatic selection and try selecting a carrier manually. Go to Settings > Cellular > Network Selection.
  4. Reset network settings. If none of the above methods work, try resetting the network settings. Go to Settings > General > Reset > Reset Network Settings.
  5. If the problem persists even after trying all of these methods, the issue may be due to hardware problems.


contact us

Please fill in the corresponding information, we will take the initiative to contact you within 24 hours after receiving the information, please make sure the contact information is correct