Diagnostic tool

Think your phone might have a fault?

Use our new online trouble-shooter to obtain information on how we can help you to get it fixed. We are adding new handsets all the time, so if your model is not featured please try again later. To start, please enter either your IMEI or T-Mobile number in the space below.

Please note that you will need Adobe Flash Player 9 or above to use this tool. If it does not load up automatically, download the latest player from Adobe's website before proceeding. Get Adobe Flash Player now