ZTE T620 ZTE BLADE X3 patern lock and pin code remove successfully
how to remove pattern lock on ZTE Mobile Phone.
You can follow this steps they are :
Battery fully charge.
switch off your phone.
and press together volume up and power key.
select recovery mode to press volume down key.
and then press power key and volume up key.
and select wipe data/factory reset.
and again select Yes-delete all user data.
and now reboot your system now.