O2 users across the UK experienced a widespread mobile data outage on Monday morning, leaving thousands without internet access on their phones.
Reports of issues began surfacing just after 10:30am, with nearly 1,000 complaints logged on Downdetector, a real-time outage monitoring platform. The issue peaked around 11:30am, with more than 700 users actively reporting problems.
O2 Confirms Outage, Investigates Issues
The major telecoms provider issued a public statement acknowledging the disruption:
“Sorry if you’re having problems using data. We’re already looking into reports to fix any issues as soon as possible. Your calls and text messaging should still be working as normal.”
The company also advised affected customers to toggle airplane mode to help restore service.
While the data outage primarily affected O2 customers, users of Tesco Mobile and GiffGaff, which operate on the O2 network, also reported similar issues.
Priority App Also Affected
Alongside data problems, O2’s Priority app—a customer rewards platform—also suffered disruptions. One user posted on X (formerly Twitter):
“The Priority app Blue Monday draw didn’t show me what I won, so I couldn’t claim anything. All I got is a blue screen.”
O2 said a “small proportion of customers” were impacted and that services have now been restored. The telecoms company apologised for the inconvenience and encouraged customers to check their live network status via the O2 website or the My Network app.
Related Network Services Also Hit
Customers on Tesco Mobile and GiffGaff reported similar problems during the outage window. One Tesco user tweeted:
“Is @tescomobile down or something??”
Both services piggyback on the O2 network and were briefly disrupted.
Are You Entitled to Compensation?
Mobile customers affected by the outage may be entitled to a refund or account credit, depending on the terms of their service agreement. O2 provides troubleshooting resources and a formal complaints procedure via its website.
Customers have 28 days to respond to O2’s resolution attempt before the complaint is closed. More information is available via the O2 complaints page and Network Support Centre.
