The NHS Covid-19 app in England and Wales has paused contact tracing as a precautionary measure due to software issues..
The app, which has been downloaded more than 26 million times, temporarily stopped sending notifications to users who have been in close contact with someone who has tested positive for Covid-19 on Sunday evening..
NHS Test and Trace said the problem affected a small group of users and that it was working to resolve it as quickly as possible..
A spokesperson said: .
