Best Mobile OS Products in 2025

GrapheneOS is an open source privacy and security focused mobile OS with Android app compatibility.

Key GrapheneOS features:

Enhanced Privacy Security Focus Regular Updates Open Source

Open Source

Operating system for smartphones and tablet computers, based on the Android.

Key LineageOS features:

Open Source Privacy Customization Regular Updates

Privacy-focused operating system for smartphones based on Android and microG.

Key CalyxOS features:

Privacy-Focused Security Enhancements De-Googled Experience Compatibility with Android Apps

Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.

Key Android features:

Customization Diverse Hardware Options Google Services Integration Open Source

Open Source

Read more about Ubuntu Touch. Our free and open source mobile OS is made and maintained by UBports! We care about your freedom and privacy.

Key Ubuntu Touch features:

Open Source Privacy-focused No Bloatware Convergence

A real Linux distribution on the phone.

Key postmarketOS features:

Long-Term Support Privacy and Security Open Source Wide Hardware Support

A free-as-in-freedom re-implementation of Google’s proprietary Android user space apps and...

Key microG features:

Open Source Privacy Lower Resource Usage Customization

Open Source

iOS is the operating system associated by default with all Apple mobile devices.

Key iOS features:

User Interface Consistency Security App Ecosystem

PixelExperience is an AOSP based ROM, with Google apps included and all Pixel goodies (launcher, wallpapers, icons, fonts, bootanimation).

Key Pixel Experience features:

Stock Android Experience Regular Updates Simplicity and Performance Wide Device Support

Mobian, Debian for mobile devices.

Key Mobian features:

Open Source Debian-based Mobile Focus Community Driven

Xiaomi MIUI Official Global Site. MIUI is a customized Android ROM developed by Xiaomi for smartphones and tablets. MIUI Forum offers ROM downloads for 251 devices including Mi 6, Mi MIX 2, Redmi Note 4 and others.

Key MIUI features:

Customizability Frequent Updates Feature-Rich Optimized for Xiaomi Devices

/e/ is a fork of LineageOS that aims to be completely free of everything Google.

Key e.foundation /e/ features:

Privacy-focused Open Source User-Friendly Interface Regular Updates

Blackberry Blend is software that seamlessly connects information between a Blackberry mobile device and a desktop PC or a tablet device.

Key BlackBerry Blend features:

Unified Access Security Productivity Compatibility