1. Turn off Noah's new mobile phone first, press the volume down button when turning it on, and then press the power button to enter the mobile phone re.
2. After entering re, select Erase Data/Restore Factory Settings as the volume button, erase data/restore factory settings, and confirm the power button.
3. Select Yes-delete all data as volume button, and confirm the power button, and the phone will automatically process it.
4. Finally, select Restart System Now to restart and restore the factory settings.