O2 down: customers report major mobile network outages across UK
Customers have complained that they cannot access data, make phone calls or send messages.
Users in Edinburgh, Glasgow, Aberdeen and Dundee have reported issues with their mobile reception.
O2 has asked customers to “reboot your phone to help clear the issue”.
Monitoring site Down Detector reports other providers which use O2’s network, such as GiffGaff, have also been affected.
Football pundit and former Manchester United player Gary Neville has complained to the company.
“Hey @O2 your network is down in Old Trafford,” he wrote on Twitter. “Not a surprise normally but it’s not match day!”
Responding to one complaint on Twitter, the network said: “Our engineers are working hard to restore services as quickly as possible. Sorry for any inconvenience caused.”