Find exclusive offers and discover Switch Up, Flexible Superfast 5G Tariffs, Free Roaming & O2 Priority. Stay connected, wherever you are.

Find O2 offers on iPhone, Samsung and more. Reduce your monthly bill by spreading the cost up to 36 months. Flex your data up or down monthly on Pay Monthly devices.

Jun 30, 2025 · Sign into My O2 for an easier way to keep an eye on charges, check your allowances and manage your bills – and find out how to change your login details.

Get help and support with all the things that matter most to you – from understanding your bill and using your phone abroad to managing your O2 account online.

My O2 gives you total control over your account – at home and on the go. Check your bills, manage your personal details, see if you're able to upgrade and much more.

Find answers to any question about an order, our products or anything else O2 on our website – or contact our helpful customer support by phone or online chat.

Get help with everything to do with your O2 account – with information on your billing and usage, how to use My O2, and what to do if you're looking to upgrade.

In relation to consumer credit, Telefónica UK Limited is authorised and regulated by the Financial Conduct Authority

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Check your data and allowance and find out when you can upgrade with the new My O2 app for iPhone and Android.