Why can't Huawei's mobile phone open the address book, SMS and system dialing?

This is because the application of the mobile phone has stopped running, and you can try to solve it.

There are too many programs running in the system, resulting in insufficient running memory. One-click cleaning can solve this problem (or restart the phone);

There are too many application data caches in the mobile phone. It is recommended to click Desktop-Settings-General-Applications-All-Find stopped programs-Clean up data;

If the installation location is not suitable, the system will decide to set-store-preferred installation location (some models do not have the preferred installation location option);

Back up mobile phone data (contacts, text messages, etc.). ) and restore the factory settings.