2. Restore the factory settings.

3, mobile phone housekeeper: open Tencent mobile phone housekeeper, there is a key to optimize the function of cleaning up garbage, it will clean up the garbage in the mobile phone, clean up as new.

4. The slimming function of the mobile phone can be deeply cleaned, directly aiming at cleaning up junk files, cache files, software residues and redundant installation packages.

5. Click the leftmost box key at the bottom of the phone, and then click the remaining memory on the screen, and you will find that the redundant memory software has been emptied.

6. Settings (System Settings)-Other-Application Management, and find the entrance of application management settings.

7. You can also find customer service.