Remove pattern lock on ZTE V5 Nubia V9180 screen pattern lock if you have enter wrong pattern many time. If you have no internet access or wifi then you can reset pattern lock via hardware keys just using simple trick. Take backup all data before reset your phone, because this will erase all data on your mobile memory.
Warning! Factory reset will permanently delete all your data and customized settings,
and will remove any applications you’ve downloaded and installed. Be sure to back up
any data and files you want to keep before you do a factory reset.
How To Unlock Pattern Lock On ZTE V5 Nubia V9180 By Hard Reset Method
Power off your phone.
Press and hold Volume Down + Power buttons together.
Release these keys when Boot loader menu appear.
With Volume keys From Boot loader menu go Boot Recovery and press power to confirm.
Select “Wipe Data/ factory reset ” with volume key and press power button to confirm.
Select “Yes—- delete all user data” and press power to confirm.
Reboot mobile when format complete.