Rotating the screen on an iPhone is essential for viewing photos and videos in landscape mode, but sometimes it doesn't work. Here's how to fix it.

Most likely Portrait Orientation Lock is turned on. One tap turns it off If your iPhone's screen is not rotating, the Portrait Orientation Lock is probably active. This article explains what it is and ...

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 it isn't rotating.