WhatsApp is suffering an outage for users across the UK, it has been reported.
WhatsApp users have been left unable to send or receive text messages, photos, documents, or videos.
The Facebook-owned started to experience problems with its service at around 09:00 BST.
The UK and mainland Europe appear to be the worst hit by the outage, however, reports of problems with WhatsApp have streamed-in from locations across the globe.
Independent website DownDetector, which tracks social comments around a certain topic to monitor outages across the globe, has mapped the problems.
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DownDetector shows hundreds of WhatsApp users experiencing connection issues across the UK, Spain and France.
WhatsApp users flooded Twitter to bemoan the connectivity problems with the chat app.
WhatsApp was bought by Facebook for an eye-watering $19 billion (£13 billion) in February 2014.
The cross-platform messenger now boasts more than 1.2 billion users.
WhatsApp has steadily added a number of new features over the last year, including support for GIFs and FaceTime-style video calls.
This is not the first worldwide outage that WhatsApp has suffered this year.
The hugely-popular Facebook-owned chat app went offline for thousands of users back in May.
The outage lasted hours, with WhatsApp forced to issue a statement about the disruption to the service.
Speaking at the time, a spokesperson for the company said: “Earlier today, WhatsApp users in all parts of the world were unable to access WhatsApp for a few hours.
“We have now fixed the issue and apologise for the inconvenience.”