Continuous rebooting of iPhones may be caused by battery problems, system crashes or hardware failures. 1. Aging battery or charging equipment may cause abnormal battery power, try to replace the charger or battery; 2. Failed system update or incompatible app will cause crash, and new applications can be uninstalled or solved by forced restart or recovery of the system; 3. Hardware problems such as damage to the motherboard requires professional inspection and repair; 4. Other situations include unofficial parts, water damage or full storage. It is recommended to back up the data and contact after-sales service.

If your iPhone keeps restarting, that's really annoying. This situation may be caused by software, setup or hardware problems. Don't rush to send me repairs. Let's take a look at the following common reasons and solutions.

1. Battery or power supply issues

One of the most common reasons for an iPhone to automatically restart is battery problems. For example, aging of the battery, inflated battery capacity, or unstable voltage during charging will cause abnormal restart of the system.

You can check this way:

• See if it suddenly restarts every time the power is almost out of power, rather than shutting down normally.
• Try changing a charger or data cable to troubleshoot the charging device.
• If it is an old model (such as iPhone 6 or earlier), the decline in battery health may have affected the system operation. You can go to the official Apple store or a reliable repair point to inspect and replace it.

2. System crash or update failure

Sometimes an error occurs during iOS update, or an incompatible app is installed, which may also cause the system to be unstable and reboot repeatedly.

Try the following:

• Connect to Wi-Fi to see if you can enter the home screen normally. If you can enter the system, but often stumble or crash, it may be caused by an app.
• Uninstall recently installed apps, especially those from non-App Store sources.
• Force restart iPhone once (the operation of different models is slightly different):
  • iPhone 8 and later: Quickly press the volume, then quickly press the volume - and then press the power button until the Apple logo appears.
  • iPhone 7/7 Plus: Press and hold the Volume- and Power keys simultaneously for a few seconds.
  • iPhone 6s and earlier: Press and hold the Home key and the Power key at the same time.

If you still keep restarting after forced restart, it is recommended to connect to iTunes (Finder on Mac) to restore or reinstall the system once.

3. Hardware failure

If none of the above methods are useful, it may involve hardware issues such as motherboards, power management chips, etc. In this case, a professional diagnosis is usually required.

Common hardware problems include:

• Moisture or aging of the motherboard
• Power management module is damaged
• Poor contact with the screen cable (some models may accidentally touch the "shutdown slider")

If your iPhone has expired the warranty period, you can go to the Apple authorized service point for a free inspection to confirm whether it is worth repairing.

4. Other low probability situations

There are also some less common but possible situations:

• Unofficial repair parts are incompatible
• Water damage not treated in time
• Exceeding storage capacity (although unlikely to cause a restart, it is also one of the potential factors)

When encountering these problems, it is best to back up the data as soon as possible and consider factory reset or contact after-sales service.

Basically, these common reasons and coping methods. If your iPhone has just started to restart frequently recently, you should first start with software and battery checks; if you haven't changed the battery for a long time, you might be able to solve the problem by trying to change the original battery.

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