What should I do if my iphone6S phone flashes back?

First, the reason and treatment of iphone4s flashback:

1, if iPhone4s escaped from prison, it may be caused by plug-in conflict. Think back to the last software or plug-in installed before the failure, or see if there are any plug-ins of the same type. Or look at the system requirements of plug-ins in cydia and remove the problematic ones.

2. If the iPhone4s didn't escape from prison, it may be that there are too many software and photos installed, or the game takes up too much memory, which leads to flashback. It is suggested to uninstall some uncommon software, store photos in Baidu cloud, and then delete some photos in the mobile phone, which not only saves the storage space of iPhone, but also basically solves the problem of flashback.

Second, the solution to the problem caused by jailbreaking iPhone4s:

1, press and hold the home button while pressing the iPhone6s power button for about 10 second, and then release it after the white Apple logo appears on the iPhone6s, and the machine will automatically restart.

2. After restarting and entering the system, enter the "Settings" of the iphone6s, and slide the screen below to view it. You can go to cydia and completely delete the plug-in that caused the failure.

3. If the above methods fail, you can resume brushing. The method is as follows:

A. Connect the iPhone6s to the computer with a USB cable, and then you will hear the prompt that the computer has been connected successfully.

B, please turn off the iPhone first, and then you will hear the prompt of unsuccessful computer connection.

C, please press and hold the on/off key and the home key at the same time until the first 10 second, please immediately release the on/off key and keep pressing and holding the home key.

D. At this time, iTunes will automatically start and prompt for recovery mode (iPhone will always keep a black screen). Then you can press and hold the shift key on the keyboard, click "Restore" and select the corresponding firmware to restore.