iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that presently powers many of the company's mobile devices, including the iPhone, iPad, and iPod Touch. It is the second most popular mobile operating system globally after Android.

iOS 11 Accessibility: Switch Control - The Missing User Guide

The Apple iOS operating system found on the iPhone, iPad, and iPod touch is the most accessible operating system out of the box for switch users. In 2013, Apple introduced a powerful new feature called Switch Control for iOS 7. Shortly after Switch Control was introduced, we put together our first comprehensive guide, Switch Control – The Missing User Guide, to help everyone understand the power of Switch Control and provide step-by-step instructions on how to get it set up. Since then we have released several updated guides for each version of iOS.