I don't want opinions, I need experienced expertises to *answer* my question.
I used to use unlock turbo sim card with my iphone 3g firmware 2.1 but i never got 3G services and i was always on edge network. my question is, does the new turbo sim card provide 3G services? what is the compatiability? what can I NOT do with the new unlock sim card? I know when there are 2 things for sure that you couldn't do when other gsm card is inserted to iphone 3g when i had firmware 2.1 unlocked. which were "visual voice" "itune" "3G service". but itune can be used when you take out the t-mobile sim card. but with this new unlock sim card for firmware 2.2, can i get 3G services? if yes, which brand? or name? to get from ebay?
there are about 5 different sellers on ebay, i don't know which one to trust and which to get.
help me out here, im on at&t right now but i'm planning to switch back to t-mobile to save on my bills but i won't do it if i dont get 3g service with t-mobile. lol
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