How to clear this cool mobile phone?

Double clear mode: erase data/factory reset and erase cache. Literally, the Chinese meaning of "wipe" is: wipe, wipe; Wipe dry and clean; From the point of view of brushing, it can be considered as the operation of erasing mobile phone data, including clearing cache and memory data, including deleting all contacts, text messages and installed software. -that is, the factory settings are restored under recovery. ? operational approach

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Press and hold the power button and the volume reduction button at the same time to turn on the phone until the phone enters recovery mode.

After entering the recovery mode, you will see several lines of English (some models are in Chinese):

-Restart the system immediately.

-apply SDcard:update.zip

-Erase data/restore factory settings

-Erase the cache partition

-install zip from SDcard

-Backup and recovery

-Advanced

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Press "Volume Down" to select "Erase Data/Restore Factory Settings", then press "Volume Up" to confirm, select "Yes" to confirm, and wait for the cleaning to be completed.