How to Unlock ZTE

1) Insert an unacceptable SIM card to locked phone, now phone should ask unlock code. Enter your unlock code provided.
2) Not working?,  remove the SIM card and try this code ###825*09# . once you get prompted for the code, enter the unlock code provided.
3) If the above does not work, try *983*8284# . It should work.
4) Try *983*865625# also it’s working on few models of ZTE phones like F102