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Lumia Unlock Instructions


These are specific instructions to help you unlock your Lumia device once you have received the 8-20 Digit Nokia Lumia Unlock Code.

Warning: Your device has 10 attempts to input an unlock code. If your device currently has 5 or less attempts remaining, please contact us for assistance!


1) Foreign sim card (sim card from another carrier)
2) Your Lumia unlock code sent via Email from us.
(If you don’t have an unlock code yet, Get Lumia Unlock Code here).


1) Power on your Lumia device with a foreign sim card
2) Phone will prompt for the 8-20 Digit Lumia Unlock Code
3) Enter the unlock code provided
4) Your phone is now unlocked!

Turn your connections and airplane mode off before proceeding with the unlocking.

Video Guide:

Unlock Nokia Lumia
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Unlock Nokia Lumia 800

If you receive an error message after inputting the code, do not try the code again and proceed to the troubleshooting steps below.

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“My phone does not prompt for a network unlock code.”

In this situation, it could be one of the following reasons:
– Phone is already unlocked
– Sim card slot is defective
– IMEI is blacklisted by the original carrier
– The phone requires an alternative way to unlock
If your device does not prompt for a code, please contact us for help to diagnose the problem.

“I input the code and received “Code Error” or “Sim Network Unlock Unsuccessful.”

In this case, you want to make sure you gave us the correct information pertaining to your device. Please check the following:
– IMEI when dialing *#06#
– Model number of the device
– Network the phone is locked to
If there are any discrepancies, contact us immediately with the correct information.

If all the information is correct, try the following troubleshooting steps:
– Factory reset the phone
This will wipe the device but may fix the issue. Back up any important data from your phone before proceeding.
– Try this alternative code input method:
1. Turn the phone on with or without a sim card (original)
2. Then Please Dial ##7820#
3. A window should appear showing a padlock with a window asking for the code along with an input button
4. Enter the code and tap the check mark beside it to confirm
5. Your phone is unlocked! (You should see the padlock showing unlocked)
If you are still getting an error message, contact us for further assistance.

AT&T Nokia Lumia 900 Invalid Code Message

If the Unlock Code provded is asking saying error, please continue to enter the unlock code provided until the phone asks for the “PUK” code. Please don’t worry about the attempts, once you have diminished all your tries, the phone will ask for the PUK code. This is where you enter the Unlock Code.

“I unlocked the phone but I’m not able to use data or send/receive MMS.”

In this case you will need to adjust what’s called the APN settings. The APN settings vary depending on the service provider you are trying to use. Please contact your service provider and they can assist you with setting this up. There is no separate unlock for data/internet or MMS. If you can call or text, your phone’s network is fully unlocked.

My Phone is asking for the “PUK” or “Security Pin” or “Password”:

If your phone is asking for one of the above, it is requesting a device or sim card passcode lock set on the phone by the user. Once you input this code, you will then be able to input the network unlock code provided by CellUnlocker.net

Customers Successfully Unlocking their Lumia Phones:

Unlock Vodafone UK Lumia 520
Unlock Fido Lumia 625
Unlock T-Mobile USA Lumia 521
Unlock T-Mobile USA Lumia 530
Unlock Metro PCS Lumia 521
Unlock T-Mobile USA Lumia 925
Unlock Rogers Lumia 625
Unlock T-Mobile USA Lumia 521
Unlock Rogers Lumia 1020
Unlock Telus Lumia 435
Unlock T-Mobile USA Lumia 521
Unlock T-Mobile USA Lumia 810
Unlock Metro PCS Lumia 521
Unlock Rogers Lumia 635
Unlock T-Mobile USA Lumia 925

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