The iPhone cannot start normally and enters the White Apple dead loop. It is not necessarily hardware damage. You can try the following methods to solve it: 1. Force restart different models and operate in a specific order; 2. Enter recovery mode to reinstall the system through iTunes/Finder; 3. Use DFU mode to repair serious system problems; 4. If it is invalid, there may be hardware failures and need to be sent to repair.

The iPhone cannot start normally and keeps restarting and entering the loop, which is usually called "white apple dead loop" or "boot loop". Although this situation seems serious, it is not necessarily caused by hardware damage. It can often be solved through some methods. Here are some practical ways to deal with it.

1. Try to restart forcing

This is the easiest and most common operation. Sometimes the system just gets stuck and isn't really damaged. There are slight differences in the forced restart methods of iPhones of different models:

• iPhone 8 and newer models: Quickly press and release the volume key → Quickly press and release the volume ? key → Long press and hold the power key until Apple Logo appears
• iPhone 7/7 Plus: Press and hold the power button and the volume ? button at the same time for about 10 seconds until you see the Apple Logo
• iPhone 6s and earlier models: hold down the Home button and the Power button at the same time for about 10 seconds

If you can enter the system normally after restarting, the problem may be temporary. But if you still restart repeatedly, further processing is needed.

2. Use iTunes or Finder for recovery mode repair

If the forced restart is useless, you can try connecting to iTunes (macOS Catalina and below) or Finder (macOS Big Sur and above) through your computer to enter recovery mode and reinstall the iOS system:

1. Connect iPhone to computer using a data cable
2. Follow the operation of the corresponding model to enter recovery mode (similar to forced restart, but in the last step, you have to wait until the screen connects to the iTunes icon before letting go)
3. When prompted, select "Recover" instead of "Update"
4. Wait for the system to download and install

This process may take several minutes, without pulling the wire or interrupting the operation. If everything goes well, the iPhone will return to normal interface.

Note: The recovery operation will clear all data on the device, so if you have a backup before, you can restore it later; if there is no backup, you can only reinstall the system and then start from scratch.

3. DFU mode is a more in-depth repair method

DFU (Device Firmware Upgrade) mode is more underlying than recovery mode, and can bypass the iOS system and communicate directly with the device firmware. It is suitable for serious system files, recovery mode failure, etc. The steps to enter DFU mode are relatively complicated, take iPhone 8 as an example:

1. Turn off your phone after connecting to the computer
2. Quickly press the volume, then quickly press the volume?
3. Press and hold the power button for 3 seconds
4. Next, continue to press the power button while pressing the Home button (or the volume ? button, depending on the model)
5. After 10 seconds, release the power button, but continue to hold the Home button (or the volume ? button)
6. It is not successful until iTunes/Finder detects that the device enters DFU mode.

After entering, you also choose to restore, but the operation is more difficult. If you are not careful, you may make mistakes. It is recommended that people with certain experience use it.

4. Hardware issues cannot be ignored

If you try all the above methods but still fail, it may be a problem with the motherboard, battery or flash memory. For example, the aging of the battery may cause unstable power supply, which may also cause an infinite restart. At this time, it is best to send it to Apple's official after-sales service or a trusted repair point for inspection.

Basically these are the methods. In most cases, the problem can be solved through recovery mode. DFU mode is suitable for advanced users, while hardware failures require professional judgment. Remember to back up the data before starting the move. If it really doesn't work, don't force it to avoid causing greater losses.

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