The UK’s second largest mobile operator, O2 which has more than 25 million customers, saw disruption to its network yesterday, Dec 6. It all began around 5 am on Thursday and was restored around 9.30pm that evening according to the firm.
4G services were however back up at 3.30am on Friday.
The company sent emails to clients saying
Mark Evans the CEO of the O2 also tweeted
Yesterday's issue was restored in the early hours of this morning. I apologise again to our customers and from this afternoon we’ll be letting them know what we'll be doing to say sorry.
— Mark Evans (@MarkEvansO2) December 7, 2018
Our 4G network was restored earlier this morning. Our technical teams will continue to monitor service performance closely and we're starting the full review to understand what happened. We are really sorry for the issues yesterday.
— O2 in the UK (@O2) December 7, 2018