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 ...

Following a tariff overhaul by T-Mobile last month, O2 is the latest network to revamp its monthly contracts. The original home of the iPhone is launching a new SIM-only tariff and updating its ...

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.