If you thought the video lock screens on the Samsung Galaxy S9 were cool and you own one of the Galaxy S8/S8+ or Note8 devices, then you’re in luck. You get access to this feature with the new update. You just need to head over to the Backgrounds tab of Samsung themes to select a premade video wallpaper. If you want to use one of your own videos, just head to the Gallery app and tap on the three dots menu located on the top right corner and then choose “Set as background.” The latest update also brings with it the June security patch.
Source: GSMArena