It looks like you're trying to access My Account over WiFi, but we need to authenticate you first!
1. Turn off your WiFi.
2. Go back into My Account over 3G - just click here
to access the homepage once your 3G is turned on.
3. Click the 'yes please' link at the top of the page and you’ll then be set up!
NB. Please note that any client/server based data optimisers such as Onavo installed on your device will prevent My Account from working. This is because they don’t provide us with your mobile number, which we need in order to verify you.