Sign in to My O2

My O2 is an easy way to keep an eye on charges, check your allowances and manage your bills. You can sign in online or download the app.

How to sign in to My O2

To sign in, visit My O2 or open the app, enter your username, and follow the on-screen instructions. If you’re having trouble signing in, take a look at our signing in help content.

How do I change my identity and security settings?

Take a look at how to change your identity and security settings.

^{Last updated: 30/06/2025}