About Pay As You Go
Pay As You Go lets you control your spending with no monthly bill. You can buy credit when you need it and use your balance for calls, texts, and data according to your tariff.
Top-up options (general)
- Top up online through official O2 channels when you are in the United Kingdom.
- Top up in store at O2 shops and authorised retailers.
- Use the My O2 app for balance checks and account management.
- Voucher codes from retail packs can be redeemed following the instructions on the voucher.
Frequently asked questions
- How do I check my balance? Dial 4444 from your O2 mobile or use the My O2 app.
- When does credit expire? Credit validity depends on your tariff and last top-up date — see your plan terms on o2.co.uk.
- Lost or stolen phone? Contact O2 immediately to secure your account and SIM.
- Need help with billing? Visit the official O2 support site for account-specific assistance.
Support & safety
For official support, use o2.co.uk. Never share your full card details or one-time codes with anyone who contacts you unexpectedly.
This page provides general information only. It is not the live top-up checkout.