O2 is investigating after mobile customers reported no data services this morning.

The firm said it was 'aware' people were unable to use 3G, 4G or other data services - including in Taunton and around Somerset - and apologised for any inconvenience.

"We are aware our customers are unable to use data this morning," the company said.

"Our technical teams are working on the issue with high priority.

"We are really sorry and working as hard and as fast as we can to fix this."

O2 urged people to keep checking their 'service status' page - which gives information on network problems, but at around 7.35am it was showing as a 'good' service in the Taunton area, despite data services not working.

At just before 8am, the service status page was 'experiencing some technical problems'.

However, the page has now been updated, informing users that a software problem has been identified - and could be affecting other providers 'around the world'.

"The network issue we are currently experiencing remains a top priority for us and we are working as quickly as possible to fix the issues," the firm said.

"All O2 technical teams are working closely with one of our third party supplier who has identified a global software issue in their system which has impacted data services and may be causing intermittent issues when our customers make voice calls. 

"We believe other mobile operators around the world are also affected.

"We apologise to our customers for any inconvenience." 

Some angry users have taken to Twitter - via wifi of course - to voice their anger...