MOBILE phone networks suffered an issue today that prevented people from making calls to certain other networks.

There are reports of people being unable to use the voice services across the country.

An O2 spokesperson said: “Today the industry experienced an issue that meant some calls between different networks were unable to connect. Specifically, O2, Vodafone and Three were unable to connect to EE and EE customers were unable to connect to O2, Vodafone and Three.

“At a time when the country needs connectivity most, it is important we work together rather than pointing fingers before facts have been determined.

“As this was a problem for a multiple networks, there is a National Emergency Alert for Telecommunications and Ofcom call at 2:30pm this afternoon to determine the route of the issue to ensure this doesn't happen again.”