Bellow is shown the exact method to insert the unlock codes for LG CU515

 

1- Power phone on with non-accepted SIM card
2- Dial *#865625# select option 1 and then again select 1
3- Dial unlock code
4- Device will show Network Lock Deactivated

Need an LG CU515 unlock code,can get it for less that 3$ :Lg unlock codes