O2 has launched SIM-only and mobile plans as part of its summer sale - but shoppers who are on the lookout for deals, we've found it much cheaper elsewhere. The retailer has launched a summer sale on ...

O2 says it wants to "shake up the old habits of the mobile industry" by launching a new way for customers to pay for their smartphone. The service, which launches today, allows O2 pay monthly users to ...

O2 pay monthly users will get two day's worth of use for free, while pay as you go users will be given 10 per cent discounts on top-ups MILLIONS of pay monthly O2 customers affected by this week’s ...