Why does my q2pro get stuck?

The mobile phone card screen may be caused by too many background programs. Suggest cleaning up the background.

Enter the authority management of miui system, and close those applications that don't need to be started. Restart the phone regularly or clear the cache. You can clean up the cache with the help of the synchronization assistant. Apps that are not often used at the same time can be deleted appropriately.

Under normal circumstances, the mobile phone runs too many programs, takes up too much running memory, and the system is overloaded, which will lead to the system being stuck or even crashing.