Too much cache garbage: In the process of using the software, some garbage files will be generated. If you do not clean them for a long time, the phone will become more and more stuck, and there will also be flash back.
Enter Settings - Application - All - to find the problematic application, clear the data or cache. (Note: Clearing the data will clear the personal settings and account information of the application.)
Too many running programs: If you do not set it, many software will run by themselves. Too many background programs on the phone will cause insufficient memory, which will cause the application to flash back. If the software flashes back, you can clean the memory first and then try again.
Antivirus software for mobile phones: some mobile phone software contains malicious code, which can be blocked by antivirus software and cannot be accessed normally. You should download games with high security factors through the green download platform or use the software store.