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Unlocking AT&T S3 LTE?


New Member
So, I purchase an AT&T branded Surface 3 LTE and am now switching carriers. When I submitted my IMEI number for a SIM unlock, it said the number wasn't found in their system. When I called AT&T directly, they stated that they don't SIM lock their tablets. Inserting a t-mobile SIM will bring up a carrier unlock window however. AT&T said that I would need to contact Microsoft.

I've contacted Microsoft now and they tell me that there is nothing they can do for me - that AT&T will need to unlock it. However AT&T still maintains that they don't lock tablets so there is nothing they can do.

Does anyone have a thought on where to go from here?


Well-Known Member
Welcome to the forum

Have you taken it to an AT&T store? I think you would get better results.