Apple (AAPL) put out a consumer warning Monday: Buy an "unlocked" iPhone at your own peril.
In the USA, most cellphones are sold "locked," meaning a phone is tied to the carrier that supplied it. Apple's combination iPod, cellphone and Internet device works exclusively with AT&T.
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In the USA, most cellphones are sold "locked," meaning a phone is tied to the carrier that supplied it. Apple's combination iPod, cellphone and Internet device works exclusively with AT&T.
Read more here