Contact us

Got a question? Before getting in touch with us, have you tried one of the many ways you could answer your question right here on our website?

Check your latest balance or allowance

To join T-Mobile - 0800 956 3089

To query an online order - 0800 956 2208

If you need help:

You can write to us in two ways:

You can email us your query
You can also write to us
Tip: if your phone is lost, stolen or faulty, or if you want to transfer your number, please call us instead of emailing - we'll need to talk to you.

When can I upgrade my phone?

If you're a pay monthly customer, you can upgrade when you have less than one month to run on your contract. Pay as you go customers may be eligible after nine months. Find out more about Upgrade my phone >
I have permanently blocked my SIM

If you enter the wrong PIN 10 or more times, this will LOCK your SIM card and you will need to replace it. To order a replacement SIM card call us on 0845 412 5000 (Charged at local toll rates) or if you have access to another T-Mobile phone, simply dial 150 . There is a charge of £10 for a replacement SIM card.
I have blocked my SIM

If you enter the wrong PIN several times in a row, your phone will become blocked and ask for a PUK code. If you register and log in to My T-Mobile you can obtain your PUK code online. See other ways to unblock your phone > .

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