If you're going to watch YouTube TV on your phone, there will probably be a point when you'll want to do something else. But how will you keep watching? If you have Android Oreo, it's now relatively easy. An update is rolling out that adds picture-in-picture support on Oreo devices. All you have to do is tap the home button and your show will float on top of whatever app you're running. You can turn it off if you'd rather not have a broadcast grab your attention.