On iPhone, Apple includes a Rotation Lock feature that when enabled locks the screen orientation so that it doesn't change when you rotate the ...

Make your iPhone or iPad screen flip and rotate, no movement required.

If your iPhone or iPad screen doesn't rotate into landscape mode when you hold it lengthways, then you've likely got the Portrait Orientation Lock turned on. Here's how you can disable it.

How to rotate your iPhone screen Open an app that supports the landscape view, such as YouTube or Netflix. Instead of holding your phone in the normal portrait orientation, rotate it on its side.