AT&T Forum (Phone Scoop)

anyone using iPhone 3G with simunlocker card with Tmo 3G serv

Sep 23, 2008, 10:37 AM

I see a lot of cards sold on ebay that you appose on to the sim of choice and place in the iphone 3 G slot to unlock with that carrier.
Has anyone used this sim unlocker with t mobile 3 G ?

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japhy

Sep 23, 2008, 10:43 AM

... because TMobile 3G doesn't work on the 850/1900/2100 3g bands the iPhone supports.

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techdoc1

Sep 23, 2008, 10:45 AM

I did't know that, what freq UMTS does it use ?

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japhy

Sep 23, 2008, 10:48 AM

TMobile USA uses 1700mhz (the AWS band) for their 3G service.

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techdoc1

Sep 23, 2008, 10:51 AM

I saw some you tube videos with iphone 3G having a CDMA hidden chip in it, and some folks using it on verizon and sprint with the carrier being shown on the iphone and calls made to 611 going to those companies customer services.

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BeachSlapped

Sep 23, 2008, 1:15 PM

LOL! I highly doubt that. The iPhone is GSM/UMTS only.
Going back to your first post... you could use it on tmobile for voice and WIFI for internet...