What is the reason for Apple's mobile phone to flash back?

1. Because the software and system are incompatible, if you exit the flashback application from the background, you still can't solve the problem. You can try to open the background management again and close all applications in the background.

2. Too many background programs and insufficient memory: too many background programs and insufficient memory will lead to flashback. Double-click the Home button to bring up the background and close all applications, and then see if it will flash back. Exited due to insufficient memory. The probability of flashback is very small.

3. Some jailbreak users may have App flashback. Especially for the beautified fonts, if the font library you change is incomplete, the system APP will not be able to open the application according to your font, and then it will flash back. Users are advised to change the complete and compatible fonts, or switch back to the original fonts, or do not jailbreak.