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 ...

The easiest way to rotate your iPhone or iPad screen is by physically tilting the device. As long as the Orientation Lock toggle isn't turned on, you can easily switch between Portrait and Landscape ...

Since the launch of the very first iPhone, every single model that followed — not to mention just about every other smartphone in existence — has had a rotating screen feature. It's simple in its ...