I am currently under at&t cingular as I am currently in the market for an unlocked sidekick 3. Now I understand that I can't use any of the features (eg: wifi) on the s3 if I am not with t mobile, but my main question is, will buying a separate t mobile sim card for the s3 make any difference with that? Is there any way of being able to use that feature besides being under a t mobile plan? All the help would be appreciated!
Orignal From: What will a t mobile sim card do for me if I am using an unlocked sidekick 3 under a cingular plan?
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