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Unlocking Nokia Lumia 620 by code is very easy, it is also safest and non-invasive method of unlocking your phone. To get code for unlock Nokia Lumia 620 You need to provide IMEI number of Your Nokia. Type on keyboard *#06# or remove battery from Your Nokia Lumia 620 to check IMEI number. IMEI is written on the information label as shown in this picture.
To unlock Nokia is required choosing network where phone was purchased. You need to also type correct IMEI of Your phone.
Selecting the correct network and the country is very important. By choosing wrong network You will risk receiving wrong unlock code.
Please follow the instruction to unlock your Nokia Lumia 520:
To unlock your Nokia Lumia 520, do the following:
1. Turn on the phone with an unaccepted SIM card
3. Enter SIM card PIN if card has it
4. The phone will ask for a PIN unlock code
5. Type the PIN (even 10 times, every time you will get message wrong pin ) code and confirm
The code should be entered until you are asked for the PUK (do not confuse with the SIM PUK)
6. Now enter the unlock code which you have received from the Sim-unlock.net
7. Your phone is unlocked
For Nokia Lumia 620 You can check Video Help
Video Help film shows what You should do, to enter an unlock code to Nokia Lumia 620.