Support So as a T Mobile user, I'm screwed?! Are you serious?(3g/4g on SGS3)

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http://androidforums.com – Here is the deal. I have a regular phone right now, with a Tmobile plan(prepaid) After doing research, it turns out that the most complete model of the USA Samsung Galaxy S3 is the AT&T version. Mainly because it supports LTE, and accepts sim cards. While the Tmobile SGS3 will never have LTE because it's hardware isn't designed for it. and Sprint/Verizon versions are out of the question because they do not accept different sim cards! However, I just found out that even with an unlocked USA AT&T Samsung Galaxy S3 , I would never get Tmobile 3G or 4g on the phone. Because 3g/4g i (General)