How to update your personal details

It’s really important to keep all your details up to date. We can let you know about changes to your bill, and send you important updates about your account. Plus, we can let you know about our exclusive offers.

You can change your contact number, address details and marketing preferences by following the steps below.

Important: You can only change your address if your account's been open for at least 30 days.

1. Open the Three app and log in.
2. Tap Account at the bottom-right corner.
3. Tap My details.
4. Tap the relevant option and follow the on-screen instructions.

1. Visit www.three.co.uk/customer-login.
2. Login using your phone number and password.
   Note: You’ll need to sign up if you’ve not already done so.
3. Click on the relevant option under My details and follow the on-screen instructions.

If you’ve got married, divorced, or changed your name by Deed Poll, you can update your name on your account by:

• Calling us
• Using Live Chat
• Writing to us

If you decide to write to us, please include a cover letter asking for your name to be changed and one of the following documents:

• A copy of your marriage or civil partnership certificate.
• A copy of your passport
• A recent utility bills in your new name
• A copy of a Deed Poll
• A copy of the decree absolute – if you’re divorced and want to use your maiden name

Please send your cover letter and the proof of your name change to us at:

Three Customer Services

PO Box 333

Glasgow

G2 9AG

To change your registered email address, please get in touch. We'll run through some quick security questions and update your info.

Follow the links below for instructions on how to change other details on your account.

• Change payment method
• Update or reset your password

For anything else, including changing your number or the named owner of the account, contact us and we’ll be able to help.

If you can't find what you're looking for, we're here to help. Get in touch any time.