Learn how to unlock your wireless mobile device for use on other carriers (formerly SIM Unlock).
We're committed to providing you with clear information about how to unlock your mobile wireless phones, tablets and mobile internet devices for use across different mobile carriers. Most mobile devices are programmed to prevent the device from operating with another wireless carriers network without first obtaining an unlock code.
It's important to understand that mobile carriers typically use different frequencies and technology to provide wireless network access. This means that not all phones, tablets and mobile internet devices are compatible between every mobile carrier – for more information about compatibility with T-Mobile’s network please check Bring Your Own Device. Even if your phones, tablets or mobile internet device is compatible between carriers, some functionality of your device may not operate the same on a different mobile carrier’s network. Please carefully review your device functionality with any new carriers’ network to make sure that the services are operating as expected.
In order to obtain an unlock code for your mobile wireless phones, tablets or mobile internet device you need to contact the mobile carrier or manufacturer who sold you the device. The original carrier or manufacturer can provide you with instructions and specific information on how to unlock the device for use with another mobile carrier. If you purchased your device from T-Mobile or if you have a T-Mobile authorized device please follow the steps outlined below to determine your eligibility to receive an unlocking code for your device.
We provide mobile device unlock codes free of charge within two business days (or provides further information about timing) for eligible devices.
Device eligibility is determined as follows:
Military and Other Exceptions: Deployed military personnel who are customers in good standing are eligible to have their devices unlocked upon provision of deployment papers. Exceptions to some or all requirements may apply in other circumstances for Business and Government Accounts. Please contact us for more details.
If a device meets the eligibility requirements, contact us to request an unlock code, and steps to unlock your device. Keep in mind, this policy is subject to T-Mobile’s Terms and Conditions of service and may change without notice. T-Mobile may deny any request for a mobile device unlock code at our sole discretion if the request is an effort to defraud the company.
Bring Your Own Device
Mobile Device Unlock App
Upgrade your device
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