WhatsApp has gone down for users across the UK, with thousands of people reporting being unable to send or receive messages.
Downdetector, which tracks outages, said more than 12,000 reports of problems had been submitted by 8.30am.
However, the number of users experiencing issues could be much higher due to the way the website collects data.
Many have taken to social media platforms, such as Twitter, to complain that the app is not working.
WhatsApp is one of the most popular messaging platforms in the UK and around the world, and is estimated to have more than two billion active users globally.
This article was originally published by Sky.com. Read the original article here.