The latest version of the Linux-based mobile operating system postmarketOS, version 25.12, has been released, built on Alpine Linux 3.23. It introduces new features, device support, and updates to user interfaces. Existing users can upgrade via the official wiki.
postmarketOS 25.12 arrived on December 23, 2025, as the newest iteration of this open-source OS designed for mobile devices. Drawing from Alpine Linux 3.23, the release incorporates fresh components and enhancements aimed at improving usability on supported hardware.
Key updates span multiple mobile interfaces. The GNOME 49 desktop environment now includes out-of-the-box support for connecting to MTP devices. KDE Plasma Mobile 6.5.3 offers better integration with Waydroid, a faster-loading lockscreen, homescreen refinements, and the new Plasma Camera app.
Phosh 0.51, another supported UI, enhances automatic brightness controls, adds more adaptive Rust portals, thumbnail previews in the file chooser portal, support for multiple media players on the lock screen, new scaling options, and a typing indicator pop-up for the Stevia keyboard. The Phosh mobile settings app now displays an initial set of configurations from the postmarketOS tweaks app, and users can customize terminal layout shortcuts within these settings.
Sxmo reaches version 1.18.1, introducing support for the i3 and River window managers, a Quick Actions menu, and replacing the callaudiod daemon with WirePlumber for improved audio mode switching during phone calls.
Additional software tweaks include mobile-config-firefox 5.1.0, which adds an about:mobile page allowing users to toggle privacy-focused options manually for Firefox's standard and extended support releases.
Device support expands with full compatibility for the Lenovo ThinkSmart View tablet. Improvements cover webcam and camera functionality on the Acer Chromebook Tab 10, call audio on the OnePlus 6 smartphone, and enhanced support for the Fairphone 5, Librem 5, and PinePhone devices.
Users can download postmarketOS 25.12 from the official website tailored to their device. Those on version 25.06 should consult the wiki for upgrade instructions.
