Apple iPhone is one of the most awaited phone series. When iPhone 3G was launched almost 1 million subscribers get a hand with it. iPhone features are remarkable and awesome. The further developments made by Apple company help users capture beautiful memories. Also, since it has been made available for applications, it offers more convenience and entertainment to users.
However, most iPhone are tied up with local service providers. iPhone locked in AT&T. What does it mean with locked iPhone? It means you will have a single provider. Your phone will be functioning with CDMA technology. It means that the handset will have a built in sim card that can't be removed or replaced. When your contract is finished, the phone is automatically locked and can't be used with any other sim cards as it is not compatible with it.