O2 is telling customers to stay alert after the discovery of a worrying new scam that's targeting UK users. The fraudulent ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Markus Haas, CEO of Telefónica Deutschland, pictured at the headquarters of mobile communications provider Telefónica (O2). The ...

O2 says its phone network is back up and running, and thoughts are turning to compensation. Richard Trenholm Former Movie and TV Senior Editor Richard Trenholm was CNET's film and TV editor, covering ...

O2 is the second 4G network to launch in the UK, taking on rival EE before the end of this month. Richard Trenholm Former Movie and TV Senior Editor Richard Trenholm was CNET's film and TV editor, ...

Virgin Media O2 has announced that it will start to switch off its 2G services in Summer 2029.

Mobile operator O2 plans to launch a 15,000-strong nationwide network of free Wi-Fi hotspots located in public places such as coffee shops, and open to customers and non-customers alike. The scheme, ...

Emboldened by EE’s pronouncement that it was looking at network-level ad blocking, fellow carrier O2—which has around 24 million mobile customers—has come out of the closet to say that it’s toying ...

Under an agreement announced on Thursday, Vodafone and O2 parent Telefonica UK will create a joint venture that will take over the running of the pair's basic network infrastructure, including their ...

Mobile network infrastructure isn't exactly an enthralling dinner-table topic, and yet somehow, O2's actually managed to make it sound interesting. The carrier's announced that it's switched on its ...