Find out how to view and manage your O2 Business account here

If you need help or have a question about Billing, you'll find a wide range of supporting information in our Billing section.

Otherwise, get in touch using the numbers below.

Telephone numbers and contact hours

Got a question about calling abroad from the UK, or are you travelling overseas and have a query about using your device? If so take a look at our calling and travelling abroad help section.

Otherwise, get in touch using the numbers below.

Telephone numbers and contact hours

If you need help with a Business app, take a look at our dedicated Business apps help and support section here.

Otherwise, get in touch using the numbers below.

Telephone numbers and contact hours

If you need help with your phone or tablet, take a look at our device support section

Otherwise, get in touch using the numbers below.

Telephone numbers and contact hours

You can check network coverage and network status, or get help if you have a network issue in our dedicated network support section here.

Otherwise, get in touch using the numbers below.

Telephone numbers and contact hours

If your device has been lost or stolen, we're available 24 hours a day to help. We can block your device, and send you a new sim with your existing number. If your device has been stolen, you need to let us and the police know within 24 hours. If it's been lost, just let us know within 24 hours. We'll then cap your liability for calls and data to £100, in case there is any unauthorised use of your device.

0800 977 7337 or +44 808 100 4439 if you're abroad.

If you have phone insurance, we'll also help you make a claim and replace your mobile.

If you need help regarding your Broadband or landline take a look at our support section here.

Otherwise, get in touch using the numbers below.

Telephone numbers and contact hours

Telephone numbers and contact hours

Telephone numbers and contact hours

Here’s the address, if you’d rather drop us a line:

O2 Correspondence Team
PO BOX 694
Winchester
SO23 5AP

Go to our Partner Network page here to find an approved O2 Partner

Go to our Franchisees page here.

Find out what support we offer vulnerable business customers here.