Thousands of O2 customers have reported problems making and taking calls.
Many logged the difficulty they had using the network via online sites that keep an eye on the status of the UK’s telecoms systems.
The problems were widespread with reports being logged by customers all over the UK.
In a statement, O2 said it was aware of the issue and had engineers looking into the cause as a “priority”.
It is not yet clear what has caused the problem but many people reported that it was impossible to make calls.
The first messages about issues were posted around 16:00BST with some saying that the system had stopped working in the middle of a conversation.
The status page on O2’s website gave few hints about what had gone wrong. The BBC checked a sample of post codes across the UK and the site responded saying phone masts in those areas were not working.
It added that this could make the service intermittent.
On Twitter, some O2 users said customer service agents told people to turn their phones on and off a few times to see if that fixed the problem.
Some found that they could only call people who were not on the O2 network.
Source by [author_name]
TEST... If it is alright with you, would it not be better to make it…
TEST... Would it be okay with you if selling was just easy? Would you be…
TEST... Adding music to your videos can help to increase engagement, sales and more. We…
TEST... This is very rarely discussed. And it is one of the most powerful things…
TEST... In this video, I show you (Watch Over My Shoulder Style) how you can…
TEST... More times than not, you may find that the thing holding you back has…