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First, you should understand why phones are locked in the first place. Network providers lock phones so that that you are forced to use their network at their rates. No other SIM card will work in their phones. You cannot take advantage of better rates from other providers. A locked phone is subject to roaming charges. When you unlock your phone, y

That's a simple one. Just borrow a SIM card from a friend that comes from an alternative carrier from yours. If the phone works, your phone is unlocked. If you get an error message, it means that your phone is locked.

A  ruling by the FCC ensures consumers can have their phones unlocked by their carriers at the end of their contract and it requires the process to be uniform and simple across carriers. In a letter to the FCC, the wireless trade group CTIA outlined six new unlocking policies:Carriers will post on their websites clear and accessible information

A locked phone is tied to one specific carrier and therefore can't be used with other wireless network providers. A factory unlocked phone and unlocked phone can both be used with a SIM card on any network. Unlocked phones, on the other hand, can have the carrier restriction removed with special software.

Factors such as high processing speed, Internal memory, expandable memory, camera features, screen resolution, and battery capacity make the best smartphones.

After a phone is unlocked, you are free to use any network and any SIM card of your choosing. You can insert and use SIM cards purchased while abroad and take advantage of better rates for calls and SMS messaging. You no longer pay roaming charges, and you can switch back and forth between carriers/networks. Other advantages are the increased resal