1. There is a Bug or program error in the application itself, which leads to flashback. In this case, you can try to update the application or reinstall the application to solve the problem.

2. There is something wrong with the hardware equipment. For example, the memory and storage space of the mobile phone are insufficient, which leads to the application not running normally. In this case, you can try to empty the phone memory, delete useless data, uninstall useless applications and so on. Free up the storage space of mobile phone.