1. Insert an unacceptable SIM card to locked phone, now phone should ask unlock code (NP code?). Easy just enter code.
2. Not working?, alright now remove the SIM card and try this code ###825*09# . got the prompt for code? enter the code.
3. Failed above, try *983*8284# . It should work.
1.Insert a non 3 SIM card into your phone and Turn it on.
2.Denied Network service will be displayed.
4.you will get the Unlock screen.
3. Input Unlock code and press ok.