There's a lot of competition when it comes to paying monthly phone and SIM contracts, with popular providers like Sky Mobile, Vodafone, O2 and EE battling it out to tempt you to switch. We've rounded ...

A warning has been issued to O2 customers after a customer's contract was cancelled - against their will. An O2 customer has written into the Guardian's consumer Q&A agony aunt section, revealed how ...

A new warning has been issued to millions of people with a monthly mobile phone contract with O2. Martin Lewis warns that up to 15 million customers could see their monthly bills rise by more than the ...

Customers who have phone contracts with the “Big Four” mobile companies could save more than £200 a year by switching when their contract ends. They found out-of-contract customers with the Big Four ...

Up to 15.6million O2 mobile phone customers will see their bills rise by 40 per cent more than they were originally told. The phone network has announced a new mid-contract policy change that will ...