There are often very specific rules that you have to follow before you can unlock a phone. For example, the phone can't be ...

Locked In a Contract . Your phone's lock status is not entirely indicative of your service contract. Nowadays, many carriers ...

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You can check if your phone is unlocked using your device's network settings, trying a SIM card from a different carrier, or speaking with your mobile carrier directly. Generally, phones purchased ...

But there's a catch: just because a phone is unlocked doesn't mean its guaranteed to work with every carrier. Different networks use different wireless technologies and frequency bands ...