Full screen mode allows you to watch videos that take up your entire screen.
Use full screen mode to improve your YouTube viewing experience
Watch in full screen
To watch while your device is horizontal:
- Tap the video that you'd like to watch.
- At the bottom of the video player, tap full screen
or swipe up on the video.
- Turn your device horizontally.
or swipe up on the video.To watch while your device is vertical:
- Go to the video that you’d like to watch.
- Swipe in a downward motion anywhere below the video player.
Exit full screen
- Tap the video.
- At the bottom of the video player, tap full screen exit
or swipe down on the video. If you're on the mobile site, tap Close
.
or swipe down on the video. If you're on the mobile site, tap Close 
.To exit full screen while your device is vertical, swipe up.
If full screen mode isn't working
If you’re watching YouTube videos on websites other than YouTube, there may not be a full screen option.