Bring Your Own Device (BYOD) setup guide

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 these steps to set up an unlocked non-T-Mobile device. Read the Non-T-Mobile phone & software disclaimer.


For Apple devices, see Setup guide for non-T-Mobile Apple device.



Check device compatibility



  • To work on T-Mobile's network, the device must be unlocked. To make sure your device will work with our network, see Unlock your mobile wireless device.
  • T-Mobile cannot assist customers with unlocking a device that came from any other carrier. T-Mobile recommends that you contact the carrier the device was originally sold on to request an unlock code.


To determine if a device is compatible with the T-Mobile network, follow these steps:


  1. Use the online compatibility checker to verify compatibility.
  2. If the checker shows "No match found," then check:
  3. If uncertain of what frequencies your device supports, contact the device manufacturer.



Select the right SIM card

  1. T-Mobile sells the Trio-SIM, which supports all three SIM sizes. See: Buy a SIM card.
  2. See your user guide to determine what size SIM card your device needs.



Activate your line

If you are not currently a T-Mobile customer, and need help activating a line of service for your iPhone or iPad, choose a plan that is right for you, or Contact Us.



Internet & MMS settings


Internet and picture message (MMS) settings need to be configured for the T-Mobile network. To set up the Internet and MMS, follow these steps:


  1. Insert the activated SIM card, turn on the device, and test opening a web page. Some devices may automatically work.
  2. If internet does not work, follow steps in Generic T-Mobile data settings.
  3. If the generic settings did not work, search the Non T-Mobile space for documents and discussions to help.
  4. If data and MMS are still not working, contact the device manufacturer for instructions on how to enter the settings.
  5. See the Non-T-Mobile phone & software disclaimer.