If my AT&T phone on a contract breaks can I just buy a cheap AT&T prepaid go phone and put my sim card into it and use it or does it need to be unlocked or something?
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Mozilla/5.0 (iPod; U; CPU iPhone OS 3_1_2 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Mobile/7D11