As millions have already learned, it’s quick and easy to setup your unlocked device to work on T-Mobile’s network. Most GSM phones, such as most phones from AT&T, will work in the T-Mobile network.
Use this document to get started using your device on the T-Mobile network.
Help & How To
To get started using your device on the T-Mobile network, follow these steps:
Ensure device compatibility
- In order to work on T-Mobile's network, the device must support one of the following frequencies:
- 850 MHz (2G)
- 1900 MHz (2G or 3G / 4G depending on location)
- 1700/2100 MHz (3G / 4G or LTE depending on location)
- The easiest way to confirm compatibility is using Step 1 of our online compatibility checker.
- If you are unsure what frequencies your device supports, contact the device manufacturer.
Unlock your device
- In order to work on T-Mobile's network, the device must be SIM unlocked.
- T-Mobile is only able to provide SIM subsidy unlocks for devices sold by T-Mobile.
- T-Mobile recommends contacting the carrier the device was originally sold on to request an unlock code.
Select the right SIM card
- Depending on which device you have, you may need a new SIM card.
- Use Step 2 of our online compatibility checker to determine which SIM card you need.
- If your device needs a new SIM card, see Buy a SIM card.
- To activate a new SIM card:
- Visit http://www.t-mobile.com/SIM
- Use our automated system at 1-877-234-4299.
Setup internet and picture message settings
- When bringing your phone from another carrier, internet and picture message settings need to be configured for T-Mobile's network.
- Some devices are automatically configured for T-Mobile's network when the SIM is inserted.
- If not, you can manually enter the Internet and picture messaging setting.
- Note: You may need to contact the device manufacturer to find out where to input the settings in your device.