Hello,
The reason why the video playback is not working can be some faulty app you have installed recently. Make sure to delete possible faulty apps, by finding the app’s icon on the Home screen. Tap on the icon and hold until an X shows up. Click on it to delete the app. You need to make sure the apps on your device are up to date. Every update always comes with some improvements, new features, and bug fixes. That’s why, if your iPhone video playback is not working on a certain app, we advise you to update it to the latest version.
Either Follow these below-mentioned steps:
Launch the App Store
Tap the Updates section in the bottom-right corner
You can select Update All or find a certain app and tap the box next to the app name to update it.
I hope you will find it useable
Topic:
App & System Services
SubTopic:
Core OS
Tags: