How to enter NEC unlock codes

Model : Nec N342i

1 – Switch ON your phone without SIM Card,

2 – Compose : **00012*CODE#.

Model : All others NEC

1 – Switch ON your phone without SIM Card,

2 – Compose : #7320*CODE#.

Model : Old NEC Phones

1 – Switch ON your phone without SIM Card,

2 – Compose : #3210*CODE# and press Call Button.