This repository is the KDE Plasma Mobile shell, a full-featured mobile desktop environment for Linux phones and tablets. It provides a touch-optimized user interface including homescreens (Folio and Halcyon), a status bar, navigation panel, quick settings drawer, lock screen, notification system, volume OSD, and system settings modules. The architecture is a Plasma shell containment built on Qt 6, KDE Frameworks 6, and Wayland, with C++ backends for hardware interaction (sensors, display power management, flashlight, screen brightness) and QML frontends for all UI components. Key entry points include the shell package (org.kde.plasma.mobileshell), homescreen containments, KWin effects for task switching, KDED modules for APN autodetection and session startup, and an initial setup wizard. External dependencies include KDE Plasma libraries (plasma-workspace, kwin, plasma-nano, Kirigami), Qt 6, KWayland, NetworkManager, ModemManager, PulseAudio, and Solid. The codebase is actively developed with a large translation footprint and two parallel homescreen implementations, indicating ongoing feature work and some technical debt.