OneOS Files

OneOS puts another Android system next to One UI on a rooted Samsung Galaxy and switches between them without flashing anything. You switch from the OneOS app and come back with Back to One UI inside the other system, or by holding Volume Up + Volume Down for 3 seconds.

What's new in 0.4.25

• Three smaller downloads, one per phone series. OneOS used to be a single 1.37 GB app with the files for every phone in it, and large downloads often arrived incomplete ("App not installed"). Each download now carries only the files for its phones, about half the size:
• OneOS-0.4.25-fold.apk: Galaxy Z Fold8 Ultra, Z Fold8, Z Fold7
• OneOS-0.4.25-s26.apk: Galaxy S26 Ultra, S26+, S26 (also the docomo S26 and the Exynos S26+)
• OneOS-0.4.25-s25.apk: Galaxy S25 Ultra, S25+, S25, S24 Ultra, S23, S23+, Z Flip7

Installed the wrong one? OneOS tells you which file your phone needs. Updating from an older version works as before: install the file for your phone over it.

• Remove OneOS data (new, in Advanced). Until now there was no way to clean up what OneOS leaves on the phone without a computer. It deletes the system you set up (with the apps and accounts in it), older copies and the session logs. Before deleting anything it checks that nothing of a session is still connected to One UI, and it refuses otherwise. One UI and its data are never touched, and downloaded system files stay where you saved them. It is new: please tell us in the Telegram group how it went.
• "Checking…" after a session is much shorter. Right after you come back from the other system, OneOS reads that session's logs and removes personal data from them first. That could take several minutes; it is now 8 to 10 times faster.

Since 0.4.23 (for readers of the GitHub releases): 0.4.24 fixed most of the camera in the Pixel systems. The flashlight tile and apps that use the Camera2 API work (Open Camera: Settings > Camera API > Camera2). Apps that use the older camera API still fail. Pixel Camera itself will not work on a Galaxy (it needs Google's camera hardware support).

[!WARNING] Experimental. It can break your phone's data. Do not try this unless you know what you are doing. Before switching you must back up your accounts and data, and remove the screen lock (PIN, pattern, password, fingerprint, face). Read the warnings in the README first.

Downloads

The app and the system images are on the OneOS download folder: https://gofile.io/d/A2PSsxv8

Download one app, the one for your phone. The system images are the same as in 0.4.22.

The app checks every file against the size and SHA-256 built into it. If Android says the app is not installed, the download is incomplete. The exact sizes and MD5s:

Already set up? Install the new file, open OneOS and tap Update.

Phone not listed? Run OneOS Probe and post its report in Phone reports in the OneOS Telegram group.