Markus Haas, CEO of Telefónica Deutschland, pictured at the headquarters of mobile communications provider Telefónica (O2). The head of Munich-based mobile phone operator O2 sees his company on the ...

Virgin Media O2 has rebranded its B2B telecoms arm as O2 Business in a bid to reduce complexity for UK businesses.

Research from O2 Business finds that rising technology and operational demands are undermining confidence in long-term growth ...

Mobile operator O2's service outage is still causing problems for customers who joined its network or upgraded since the issues began on Friday. Calls, texts and data for existing customers should be ...

Early indications are that O2's satellite D2D service is a popular option, but mainly for those rare occasions when ...

Mobile operator O2 has launched two roaming price plans, giving its UK customers cheaper overseas rates than any of its competitors and becoming the first network to allow frequent travellers to ...

Mobile network operator O2 has blamed a problem with a third-party software installation for a nationwide network outage that has left millions of subscribers unable to access 4G data services on ...