O2 has launched My O2, an official iPhone app to monitor your usage, and see just how much money you threw away when you signed that 18-month contract Richard Trenholm was CNET's film and TV editor, ...

Although I'm not an O2 customer this one looks much the same as the 'My EE' app which we covered a while back. If you are concerned about going over your allocated minutes, SMS or data just launch the ...