How to unlock a phone Nokia

Model (Nokia Lumia) :

1) Turn off the phone
2) Insert a SIM card of a new operator
3) Turn on the phone
4) Enter the PIN if requested
5) Wait for the on-screen display of the release notification
6) Enter the code (7, 8, or 20 digits) and press "Enter"

Handling (Other Nokia) :

Turn on your phone without a SIM card and then dial your unlock code in the form:
#PW+CODE+1# by replacing Code with the Code you received.

(If the original network is Fido / Roger Canada, please dial #PW+CODE+7#)

The letter P appears by pressing 3 times quickly on the star key (*)
The letter W appears by pressing the star key 4 times quickly (*)
The letter + appears by pressing 2 times quickly on the star key (*)

-> The phone confirms the unblocking with a message of the style "restriction canceled".