OneOS

byChar0n · Tools

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AI summary

Runs a second Android system alongside stock One UI on rooted Samsung Galaxy phones, switching without flashing. Version 0.4.74 adds device support and fixes for OxygenOS, booting, guest root, and other issues; it works only with stock One UI on supported Samsung devices.

Generated by AI. May contain inaccuracies.

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About this app

OneOS runs a second Android system next to One UI on a rooted Samsung Galaxy and switches between the two without flashing anything. One UI stays installed; the other system lives in a folder on the phone and starts on One UI's kernel as a container with its own zygote and system_server. You switch from the OneOS app and come back with Back to One UI (the OneOS app inside the other system) or by holding Volume Up + Volume Down for 3 seconds.

License

OneOS is licensed under the Apache License 2.0. Parts of this repository come from other projects and keep their own terms: the OneLineage-derived session scripts (published with WeWaffles' permission). See NOTICE and CREDITS.md.

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What's new

v0.4.74Nov 10, 2026

OneOS 0.4.74: more phones, OxygenOS and boot fixes Update from the Update banner on the app's launch screen, or install the APK from SourceForge: https://downloads.sourceforge.net/project/oneos-mirror/v0.4.74/OneOS-0.4.74.apk
New phones
Galaxy A34 5G and Galaxy A15 on One UI 9: ColorOS 17, Infinity-X and HyperOS (untested on these phones; OxygenOS 16 stays for One UI 8). Galaxy S22 Ultra (au, SCG14): OxygenOS 16 (untested). OxygenOS 16 Black screen on the Galaxy A25, A33 and A53 (Exynos 1280) fixed: OxygenOS waited forever for a Qualcomm GPU file; it now starts with its own GL renderer on these phones. Slow and warm phones: OxygenOS's NFC app crashed about five times a second on Samsung phones; it is now left out. Google account, Chrome and Gboard on One UI 8.5 phones: these apps called Android features the OxygenOS framework does not have; the session now reports OxygenOS's own Android version.
Fixes
Heat after a session: a log search after returning to One UI no longer keeps a CPU core busy into the next session. Guest root: LSPosed, Vector and other Xposed frameworks can be removed again (before, every switch failed at setup); a module step that hangs now stops after a few minutes and returns to One UI instead of freezing the phone. Thermal modules: switching is refused while a root module that turns off thermal control has stopped One UI's thermal service (the cause of resets on the S23 Ultra). Turn the module off and restart. OriginOS on the Z Fold7: a slow first boot is no longer taken for a failed one. Guest root on the older kernels (S22 series, S23 FE, A25/A33/A53); SIM for Infinity-X on the MediaTek A07/A16 4G/A17.
Custom ROMs
OneOS runs next to stock One UI only. On a ported One UI (One UI from another phone), a ROM without One UI, or a phone that is not a Samsung, OneOS now says so, and does not switch or send reports.
Also
More in the session logs (sound, module scripts, the phone's last reset), so the next report shows more.