1. juan6996's Avatar
    I apologize because I know that the answer is somewhere in these forums, I just can't find it anywhere!

    Ok, so I finally got my unlock code for my ATT Lumia 900. I want to unlock it for higher resale value, so I don't have a non-att simcard. I know that there's a dialpad code to unlock it, because I've used it before. You put the code in, and it takes you to the carrier unlocking screen. Does anyone know this dialpad code? Thanks.
    11-13-2012 05:07 PM
  2. TX6shooter's Avatar
    I apologize because I know that the answer is somewhere in these forums, I just can't find it anywhere!

    Ok, so I finally got my unlock code for my ATT Lumia 900. I want to unlock it for higher resale value, so I don't have a non-att simcard. I know that there's a dialpad code to unlock it, because I've used it before. You put the code in, and it takes you to the carrier unlocking screen. Does anyone know this dialpad code? Thanks.
    ##782#, worked for me
    juan6996 likes this.
    11-13-2012 07:55 PM
  3. juan6996's Avatar
    This, that was exactly what I was looking for! unlocked now :D
    11-13-2012 09:07 PM
  4. elvisff's Avatar
    where are you entering this? Do you have to have a sim in the phone at all? I enter the code under the emergency dialpad and it does nothing. Any ideas?
    11-17-2012 01:20 PM
  5. TX6shooter's Avatar
    Leave your ATT SIM in the phone. Enter ##782#, hit call, it will prompt you for the 8 digit unlock code.
    11-17-2012 02:53 PM
  6. markeboyle's Avatar
    is there a similar code for a tmobile lumia 521 phone to unlock without an invalid sim card?
    08-23-2013 12:10 AM
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