An OS is the main system software that allows your device to run. It determines how everything on the screen is laid out and how your device functions. It also gives you access to apps that are designed for your device's OS.
Examples of different operating systems include Android™, Apple® iOS and Windows®.
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Mobile device operating system (OS) FAQs
Learn what an OS is and how to manage your device’s OS version.
About operating systems
Managing your OS
Android is a trademark of Google, Inc. Use of this trademark is subject to Google Permissions.
iOS is a trademark or registered trademark of Cisco in the US and other countries and is used under license.
Windows Phone is either a registered trademark or trademark of Microsoft Corporation in the United States and/or other countries.
Apple is a registered trademark of Apple Inc.
