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Mobile device operating system (OS) FAQs

Learn what an OS is and how to manage your device’s OS version.

Find more topics in Additional support

About
Managing
OS versions

What is an operating system (OS)?

Where can I learn about the features of the current smartphone OS versions?

What's the difference between an OS update (system update) and a software update?

Types of software updates
Update Type	Description	Example
OS update	Update to a new version of the device OS (often includes significant changes to the on-screen look and how certain features work)	Android device update from OS 11 to OS 12
Software update	Minor update to current OS version (may include fixes to issues or enhancements to certain features)	OS update from 12.1.1 to 12.1.2

How do I know what OS my device has?

How do I know when an OS update is available for my device?

Why should I update my device OS?

What are the current versions of each smartphone OS?

Can I revert to a previous OS version on my device?

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.

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Mobile device operating system (OS) FAQs

About

Managing

OS versions