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Old 05-22-2008, 01:25 PM   #4 (permalink)
Knows Where the Search Button Is
Join Date: May 2006
Location: Brooklyn, NY
Model: 8100
Carrier: T-Mobile
Posts: 17
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Yeah. I use a t-mobile SIM in an unlocked AT&T 8820. If your SIM is active, just pop it into the device and go. The only caveat is that the WiFi will not work to make calls-if your AT&T device has WiFi.
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