How to unlock and rotate the screen on an iPhone, or troubleshoot it if it won't rotate

Rotating the screen on an iPhone is essential for viewing photos and videos in landscape mode, but sometimes it doesn't work.
Android Authority

Android screen won't rotate? Here's how you can try to fix it

We tend to take automatic screen rotation for granted on Android phones, and that’s by design — it’s supposed to enable seamless transitions when an app needs more vertical or horizontal space, say ...

How to rotate your iPad screen and lock or unlock its orientation

Here's how to rotate the screen on your iPad, how to lock or unlock its orientation during use, and how to fix an iPad when ...
The Verge

How to use Android 12’s clever new auto-rotate system

Google’s upcoming Android 12 update has plenty of eye-catching features, but don’t let yourself be fooled: sometimes, it’s the smaller, less obvious elements that are most deserving of your attention.