The specific method:
1: First the phone completely shut down the phone
2: After the end of the machine, press and hold the volume increase key + home key + power button together, do not loose, after a while into the recovery mode, note: In recovery mode, press the volume up and down key to select, press the power button and the home key to determine.
3: Enter the recovery mode after choosing to restore the factory settings, whether your mobile phone is the system itself with the recovery or third-party recovery, as long as there is "Wipe data/factory reset" (Chinese version is: empty all data) this one can
4: Select "Wipe data/factory Reset" (Chinese version is: empty all the data), and then press the Power-on key to confirm, and then select "Yes-delete All Data" (yes-clear all the information) can
5: Then again select "Reboot system Now", press the Power-on key to confirm the start of the phone can be