I'm trying to keep YouTube app in Full Screen mode after playing the video. Instead, it minimizes itself when the video is finished. This is a problem for my 3-yo son since he cannot figure out what is happening, and how to make it big again. I checked app settings, i googled a lot, but could not find a way to keep it in the full screen. I would greatly appreciate any help or advice on this. Philopator. Samsung Galaxy 7.0 Plus.