A review will be conducted to find out why a “very small proportion of mobile users” did not receive the test of a new national emergency alert system on Sunday. The Cabinet Office said the “vast majority of compatible phones” received the alert as part of what was said to be the biggest public communications exercise carried out in the UK.
But the Government department said it was aware that the 10- second alarm and message notification was not delivered to some mobile phones. Three customers were among those to report not receiving the communication test.
The network provider said it would be working with the UK Government to understand what had happened. A small number of people have also taken to social media to flag that they have not been able to make or receive calls since the 3pm alarm went off on their device.
