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how do you make cell phones from other countries work in America? do you have to change the frequency ? what do i do? Answered

well i my aunt has some phones that she got from china or japan i think, and she has t-mobile, but the service isn't working, so how do i make it work?


If it's not a multi-band phone, it won't work in all countries. Asia uses a different band than us. You may also need the correct service plan, so you should contact T-Mobile.