Double clear: remove the battery, then install the battery, press the volume key (I don't remember whether it is the up key or the down key), then press the power key, and then use the volume key to select Restore, which contains two erasures, all of which are executed!

Some don't need to enter the recovery, just press the volume button and the power button to see if there is a reset item, and then execute!

However, it is still recommended to double clear.