UK mobile networks including EE, Vodafone, O2 and 3 went down from around 9am on Tuesday morning leaving millions unable to work from home.
O2, EE, Virgin, Tesco Mobile, Vodafone, BT, GiffGaff and 3 are all experiencing problems with their network due to high capacity.
Due to a huge spike in those working from home networks are struggling as they are working over capacity.
Down Detector reported issues at 09:14 GMT, and O2 said in a statement that updates on progress to repair their network will be available soon.
The British Prime Minister, Boris Johnson told reporters at a press conference in Downing Street on Monday that “now is the time for everyone to stop non-essential contact and to stop all non-essential travel”
As part of a range of stringent new measures, Johnson has now urged people to work from home and avoid pubs, clubs and theatres.
Johnson said elderly and vulnerable people would have to begin self-isolating for “around 12 weeks” from the weekend.
Now is the time to stop non-essential contact with others, he said, and it’s particularly important for over 70s, pregnant women, and those with medical conditions, including those with high blood pressure.
The prime minister said, “When it comes to curfews we are keeping all measures under review.”