The World's Most Popular Messaging App Is Now Available For Your Desktop.

WhatsApp, which is used by 700 million users to communicate between smartphones and tablets, can now be used on desktop computers - but it still must be linked to the phone app.

For the desktop service to work, the paired phone needs an internet connection.

Currently only those using the app on Android, Windows and BlackBerry smartphones will be able to use the desktop version - so iPhone users will have to wait.

To set up the service, users have to visit http://web.whatsapp.com in a Google Chrome browser.