Needing help with a Galaxy S3 SCH-R530u

Ok so I own this Galaxy S3 and its thru US Cellular. Now its already been upgraded to 4.4.2 and I already know that once you get passed 4.3 your basically stuck with knox. Im ok with that except for the factor I'm switching carriers. I'm switching over to T-Mobile, and my phone is still locked,...



Needing help with a Galaxy S3 SCH-R530u



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