Bellow is shown the exact method to insert the unlock codes for LG GS390 Prime

 

1- Power phone ON with a non-accepted SIM card

2- Select Unlock

3-Phone will indicate phone is locked

4- Press Yes

5- Dial unlock code and press OK

6- Phone will ask for the unlock code again, dial  same code and press ok

7- Phone is unlocked

or

1- Power phone ON with accepted SIM card

2- Dial 2945#*390#

3- Select unlock menu

4- Dial unlock code, press OK

Need an LG GS390 Prime unlock code,can get it for less that 3$ :Lg unlock codes