Hello, 1, there may be too many third-party software downloaded; Or it is caused by too many programs running in the background at the same time. It is recommended to try to uninstall some software or close programs running in the background at the same time.

2. Use the system manager to clean up the mobile phone garbage and cache regularly, and enter the system manager->; Garbage cleaning/cleaning acceleration-> Click Clean, or you can use a third-party Tencent housekeeper to try to clean up the garbage.

3. Is there a memory card installed? If a memory card is installed, it is recommended to remove or replace the memory card for observation.

4. If there is no improvement, back up the important data on the mobile phone and restore the factory settings.

5. If the above methods still can't be solved, you can send the mobile phone for after-sales inspection. After-sales address inquiry: enter the user center-> After-sales assistance (official after-sales)-> Network query (maintenance service)->; Enter the region to query.