It looks like you're using a Wi-Fi connection.
If you're a Pay Monthly customer
you can still use My O2, just follow these quick steps:
1. Switch off your Wi-Fi.
2. Click here
and scroll to the bottom of the page and choose 'Yes please'.
3. Then you can turn your Wi-Fi back on.
Pay & Go customers
, we're working on it! You can still access My O2, but you'll need to switch off your Wi-Fi first.