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'Seven million' O2 users affected

Around a third of O2 customers, about seven million people, were "potentially impacted" by its network outage, the mobile service provider has said. The networks have been restored after users were unable to send or receive calls or texts.

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CEO admits he is 'embarrassed' by O2 UK network problems

The chief executive of O2 UK, Ronan Dunne, has apologised for the problems that left thousands of customers unable to use its services for the last 24hrs.

He told Sky News that he was embarrassed by the network failure and that O2 would "make it up to our customers and make sure it doesn’t happen again".

Mr Dunne added: "Let me reassure you we will redouble our efforts to get to the bottom of this."

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