I just got unlock codes from tmobile for my 2 LUMIA 635 phones. I didn't realize you need a third party sim to unlock. So I have a couple of questions.
1.) Do the unlock codes expire? If so how long do I have to get a sim to unlock with?
2.) I read somewhere that you must be in the service area for the sim you are unlocking with. Does that sim need to be activated too? So could I buy something like a $0.99 straight talk sim and use that to unlock without buying a bunch of minutes?
1.) Do the unlock codes expire? If so how long do I have to get a sim to unlock with?
2.) I read somewhere that you must be in the service area for the sim you are unlocking with. Does that sim need to be activated too? So could I buy something like a $0.99 straight talk sim and use that to unlock without buying a bunch of minutes?