This article is from the source 'bbc' and was first published or seen on . It last changed over 40 days ago and won't be checked again for changes.

You can find the current article at its original source at http://www.bbc.co.uk/news/uk-32880076

The article has changed 4 times. There is an RSS feed of changes available.

Version 1 Version 2
O2 service 'back to normal' after network signal problems O2 service 'back to normal' after network signal problems
(about 1 hour later)
Phone provider O2 has said its service is "back to normal" after customers complained of problems with reception in several parts of the UK.Phone provider O2 has said its service is "back to normal" after customers complained of problems with reception in several parts of the UK.
The company has apologised after people in areas including London, Manchester, Glasgow and parts of Northern Ireland said they had lost signal. The company has apologised after people in areas including London, Manchester, Bristol, Glasgow and parts of Northern Ireland said they had lost signal.
Business Secretary Sajid Javid was among those expressing frustration on Twitter, asking O2 to "sort it out".Business Secretary Sajid Javid was among those expressing frustration on Twitter, asking O2 to "sort it out".
O2 said an investigation into the cause of the problem had been launched.O2 said an investigation into the cause of the problem had been launched.
A spokesman said "some customers experienced some problems accessing our network" and that the service had returned to normal at 23:35 BST on Monday.A spokesman said "some customers experienced some problems accessing our network" and that the service had returned to normal at 23:35 BST on Monday.
He added: "We apologise for any inconvenience caused to those customers affected and we will now begin a full investigation to identify the root cause."He added: "We apologise for any inconvenience caused to those customers affected and we will now begin a full investigation to identify the root cause."
Many O2 customers had taken to social media complaining of not being able to send or receive calls and text messages, as well as problems with the 3G internet signal.Many O2 customers had taken to social media complaining of not being able to send or receive calls and text messages, as well as problems with the 3G internet signal.
While the problems were ongoing, it had advised people to reset their device, and visit its support page if problems persisted.While the problems were ongoing, it had advised people to reset their device, and visit its support page if problems persisted.
O2 said it was continuing to monitor the situation and was working with its suppliers to investigate how the signal failure occurred.O2 said it was continuing to monitor the situation and was working with its suppliers to investigate how the signal failure occurred.
Media and technology analyst Matthew Howett told BBC Breakfast the fact that O2 had advised customers to turn their phones off and on again suggested "a problem with registering with the network".Media and technology analyst Matthew Howett told BBC Breakfast the fact that O2 had advised customers to turn their phones off and on again suggested "a problem with registering with the network".
He said while it was still unclear what had caused the issue, "a piece of software not doing its job properly" could have been to blame.He said while it was still unclear what had caused the issue, "a piece of software not doing its job properly" could have been to blame.
Are you on the O2 network? How is your service? You can share your experiences by emailing haveyoursay@bbc.co.uk.
If you are available to talk further with a BBC journalist, please include a contact telephone number.