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 ...

Mobile network operator O2 UK will begin trials of a wireless video service with 350 of its mobile phone customers at the end of this month, ahead of a possible commercial launch later this year. The ...

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 ...