The phone streams video from its front and rear cameras at the same time to Facebook or YouTube .
The Queen of Grime regularly clocks up millions of views for her videos on YouTube and returned to Birmingham for a BBC 1Xtra event.
Amateur footballer Seb Carmichael-Brown on setting up Hashtag United with his brother and a bunch of mates. Hashtag United's YouTube channel regularly attracts hundreds of thousands of views, bringing in lucrative sponsorship deals. (Picture: The Hashtag United squad; Credit: Hashtag United)
Facebook is hoping to capitalise on its two billion users as it makes a move into the crowded market for online video.
Users will soon see a new Watch tab that will offer a range of shows, some of which have been funded by the social network
Like many of Facebook's services, information on users personal tastes will play a role in determining what content they see, and viewers will also be able to see comments and connect dedicated groups for shows.
The move will bring Facebook into direct competition with traditional TV networks and video streaming services like Netflix and YouTube.