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Old June 20th, 2012, 03:34 PM   #86 (permalink)
Lars
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I don't have one like that which you are asking me to try. However, most USA T-mobile based cards do not seem to work based on others who have tried. It is very hit and miss. AT&T based cards like Straight Talk which run on HSPA work well. I suspect it is because of T-mobile's AWS band deployment that those sim cards favor those bands. Maybe only older Tmobile Edge cards work. It's not really known. Overseas T-mobile sim cards /networks that utilize HSPA seem to work fine from my experience. In any case, if you got a US T-mob card to work it would only provide Edge service.
Here is my phone roaming in the USA on AT&T with a uk (tmobile I think) sim card.
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