Uninstall the security guards, mobile phone housekeeper, mobile phone assistant, XXX master, running software, battery housekeeper and other software installed by all users themselves in the mobile phone. Don't install it, it's not needed at all, it takes up a lot of running memory, and it will also affect the performance of the mobile phone.

Mobile phones have their own LBE security software. If reinstalled, it will occupy internal storage space, conflict with LBE, and affect the performance of the mobile phone, and the battery manager will affect the battery performance. Running score software is an entertainment software, which has no meaning and affects the use of mobile phones.

Find the backup icon on the mobile phone desktop, usually in the security center or in the backup in the settings, first make a backup of the mobile phone data, save the backup package in the computer, and then you can recover it later.

Or open the synchronization function of millet cloud service in the settings, and you can log in to millet cloud service to synchronize the data back to your mobile phone in the future.

Then, turn it off.

In the off state, press and hold the volume up first, and then press and hold the on key to enter the recovery interface of Xiaomi. The volume key can be adjusted up and down, and the key is the confirmation key.

Select Simplified Chinese, Clear Data, Clear Cache, Data and All Data, and then select Restart.