How to change video playback settings on iphone
You can play videos on iPhone with the screen off in order to save battery power. This is useful when you’re at a meeting, working out, or doing something else where you know video playback isn’t necessary and it’ll just be a distraction.
To turn off video playback, go to Settings and then go to General. Scroll all the way down to the bottom and look for the Video Playback option. From here, you can choose to disable videos from playing with the screen on and lock orientation. However, if you would rather not have any interruptions from video playing automatically, you can always set your iPhone to stop videos from playing in the background using Do Not Disturb mode.