Facebook is testing videos that autoplay with sound turned on

Facebook is testing a change to its main mobile apps that would have videos automatically start with the sound turned on, according to Mashable. The test, which appears to be active in Australia and may be ongoing in other countries, has Facebook video playing with sound so long as users have the volume on their smartphone turned on. In a similar test, some users are able to activate and deactivate the sound by tapping a small button in the corner of the video, similar to Twitter and Vine&r