612: Screen on Face

5790.776 - 5807.17 Marco Arment

But if you just ask it to project video, if you're watching a TV show or a movie or a YouTube video, well, there's hardware decoding for the video, and that is actually one of the lighter things that your phone can do. It doesn't have to show the video on its screen, so it's saving on battery life on not lighting up its screen, right? It's using the battery that's in your glasses.