getactivity/androidsystempropertycollect

AndroidSystemPropertyCollect is a community-driven data collection project that gathers system property information from Android phones across many different manufacturers and OS versions. The author created it to support another project called DeviceCompat, which helps Android apps detect what kind of device and operating system they are running on. The problem the author ran into was simple: they did not own enough phones to test against every Android variant out there, so accuracy suffered. Android manufacturers like Xiaomi, Huawei, Samsung, and others each customize Android heavily, creating distinct operating system layers, MIUI, HyperOS, OneUI, HarmonyOS, ColorOS, and dozens more. Each variant exposes a different set of internal system properties that apps can read. This project collects those properties into text files, each paired with a screenshot of the phone's OS info screen, so the author can build a comprehensive reference database. Contributors use a simple developer command to dump their phone's properties, rename the file with their OS and device info, and submit it. The project tracks coverage across a long list of manufacturer OS versions. Some are well-represented already, while others, like 360UI, EUI, and SmartisanOS, are extremely scarce. The README marks which versions are saturated and which still need samples, so contributors know whether their device is actually needed. The more complete the coverage, the more accurately DeviceCompat can identify devices in the wild. This is really a crowdsourcing effort aimed at Chinese Android developers and enthusiasts who own devices running less common OS versions. Anyone with an Android phone that falls into a "scarce" category can contribute by submitting their device's property file and screenshot through a pull request or issue. The author frames it as a communal effort, one person cannot dig the well alone, but many hands can.