Mobile Device Unlock: Nokia Lumia 710

Learn how to use the Mobile Device Unlock code of the Nokia Lumia 710.




SIM unlock phone


The Mobile Device Unlock code allows the device to use a SIM card from another wireless carrier. This may be necessary when traveling internationally. To enter the Mobile Device Unlock code, follow these steps:


Important: Stop if you receive an error message. The device may lock permanently if you enter the incorrect code multiple times.


  1. See if your phone is eligible to unlock: Mobile Wireless Device Unlocking.
  2. Contact Customer Care to request the Mobile Device Unlock code for your phone.
  3. Insert the non-T-Mobile micro SIM card into the device.
  4. Turn on the device. The phone will display a message "This SIM Card can only be used on specific networks. Contact your Customer Service Center for the unlock code. 10 attempts remaining."
    Note: If this message does not display, open the phone dialer, enter ##782#, and tap call.
  5. Enter the unlock code.
  6. Tap enter.
  7. If successful, the device displays "PIN Accepted".