> For the complete documentation index, see [llms.txt](https://chunhthanhde.gitbook.io/google-learning-programs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chunhthanhde.gitbook.io/google-learning-programs/google-it-support-professional-certificate/course-3-operating-systems-and-becoming-a-power-user/module-2-user-and-permissions/1.users-and-groups/6.mobile-users-and-accounts.md).

# User Accounts in Mobile Operating Systems 📱💻

## Single-User Devices 🔒️👤

Most mobile devices are used by a single person. As a result, mobile operating systems handle user accounts differently than other operating systems.

For example, a GPS device in a vehicle may not require any user authentication at all. The user accounts exist in the OS, but the user never has to interact with them. 🚗️

On the other hand, smartphones and tablets running iOS or Android will have you enter a username and password during the initial setup. This primary account is used to create a user profile, which contains your accounts, preferences, and apps. 📱

The primary account can also be used to synchronize settings and data to the cloud. When you set up a new device with the same primary account, you can restore your data and apps. 🌐💾

## Multiple Accounts on Mobile Devices 👥📱

In iOS and Android, you can sign in to additional accounts (e.g., email, social media) on your device. Apps can use these accounts for single sign-on (SSO), allowing you to authenticate without providing additional credentials. 🔑

As an IT support specialist, you may help users set up these accounts, but never ask for their passwords. Encourage them to change the password if they reveal it to you. 🙅‍♂️🔒

## Securing Mobile Devices 🔒️📱

Unlike larger devices, mobile operating systems don't typically require you to re-enter your primary account password each time you use the device. This is convenient, but also means anyone can access your personal and work data. 🔓

Mobile OSes offer several security features to protect your data, such as device passwords, PINs, unlock patterns, and biometric authentication (e.g., fingerprint, face, voice). 🔒🔍

Organizations may also use mobile device management (MDM) policies to enforce device configuration and usage rules. 📱🔒