Quote:
Originally Posted by HarryT
An unlocked phone can be used on any network: that's what "unlocked" means. Just buy a SIM for your network of choice.
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As long as the network uses the same technologies.
Of the four biggest providers in the US AT&T and T-Mobile use GSM (SIM Card switching should work), Sprint & Verison use CDMA (don't use SIMs, hard to switch from one CDMA provider to another). Many other services use one of these providers networks.