Make sure you are connected to the T-Mobile network or Wi-Fi, then select your device type and follow the steps. If your device isn't listed or the steps don't work, choose your device on the …

Learn how to unlock your wireless mobile device for use on other carriers (formerly SIM Unlock). See device compatibility and unlock requirement.

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Security locks keep unwanted users out of your phone, but may accidentally keep you out, too.

PUK code unlock If a SIM PIN security code has been entered incorrectly multiple times, the SIM will lock and require you to enter a PUK code to use your device again.

Log into your T-Mobile Account and choose the Accounts page. Select the line you wish to unlock, then choose Check device unlock status. Under the device image, check if your device is …

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Let’s start with a couple questions. Is your phone unlocked? “Unlocked” just means that your phone isn’t connected to a specific carrier’s network and can work with other service providers. …