O2 is telling customers to stay alert after the discovery of a worrying new scam that's targeting UK users. The fraudulent message, which is arriving on devices, claims that customers’ SIM cards are ...

O2 has just issued an urgent warning to its customers after the discovery of a fake text message that suggests a SIM is about to expire.

Tech journalism comes with a list of perks. Hot pop-star girlfriends, sacks of cash, Hertfordshire mansions -- none of these are on that list. But I do get plenty of free tech, much of which tends to ...

O2's network collapsed overnight, but those signed up to other mobile providers shouldn't feel too smug: the outage caused carnage well beyond its direct customers. Waiting for a bus in London? The ...

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 ...

O2 is launching a new service that will offer a free speed boost to thousands of its customers.

O2 has became the latest network carrier in the United Kingdom to offer the cellular version of the Apple Watch Series 4. iPhone users can now order the LTE-enabled smartwatch through the O2 website, ...

Thousands of O2 customers face pricier monthly bills from April 1 as the company rolls out its annual price hikes. From April 1, the monthly price of mobile plans are increasing, but the amount you’ll ...