Users across the world are reporting issues with popular messaging service WhatsApp.

Hundreds of app users began experiencing problems with sending and receiving media on Sunday morning.

The Herald: Down DetectorDown Detector

Normal text messages and links appear to be delivering fine, however, voice notes are also suffering.

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The Herald: Source: Down DetectorSource: Down Detector

Website Down Detector is showing large scale problems across the UK and part of UAE, with other issues evident in parts of Spain and Italy.

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It is not yet apparent if the issue is affecting Facebook messaging services.

People have turned to other social networking sites to spread word of the issue.