com.mediatek.batterywarning Copy

A MediaTek platform component found on MediaTek-based devices. MediaTek publishes no public documentation for it, and we could not find an authoritative source describing what it does, so this note deliberately stops at what can be observed rather than guessing at its behaviour. What the data shows: it is built into the ROM rather than installed, because in our sample every copy is signed by the device maker's own framework-signing key, across a wide spread of MediaTek-based makers including Blackview, CUBOT, HOTWAV, Infinix, Lenovo, Newland, NUU, OUKITEL, Ulefone, Unihertz, Xiaomi, Motorola, realme, Samsung and Sony. It reports no user-visible label, showing instead as its own class name, and it is not recorded as user-facing on any device we have seen, so it has no launcher entry. Its recorded permissions are RECEIVE_BOOT_COMPLETED, START_ACTIVITIES_FROM_BACKGROUND, SHUTDOWN, INTERACT_ACROSS_USERS_FULL, WRITE_SETTINGS and WRITE_SECURE_SETTINGS. Taken with the package name, that is consistent with a component that starts at boot and can put a warning in front of the user and power the device down, but we have not been able to source that, and it should be read as a reasonable inference rather than a documented fact. Version note: we record it on devices from API 27 through API 35 (Android 8.1 to Android 15), with recent builds reporting a version string that simply tracks the platform version, 14 or 15. It does not appear on Android 16 or newer devices in our sample, but with a sample this size that may reflect what we have observed rather than removal from newer MediaTek platforms, so do not read it as the package having been dropped. No sourced change in its role across those releases is known. For Android Enterprise, EMM and kiosk use no enrolment, policy or connectivity role was identified for it, and nothing about it is user-facing on the devices we have seen. We are not giving a disable verdict: an undocumented platform component holding the SHUTDOWN permission is not one to switch off on a hunch, and a fleet that has a reason to disable it should test on a single device of that exact model first. As an unsourced precaution, given the package name, low-battery behaviour is the thing to watch during that test.

• Package provenance for com.mediatek.batterywarning - Android System App Database →

• Re-signed by each device maker with its own platform key - 8 different certificates appear across 7 device makers in our sample. That is the signature of a stock AOSP/system package every OEM builds and signs itself, not a single maker's or a third party's preinstall. These are platform-level keys: they also sign the Android framework itself.
• Its largest observed manifest declares 6 permissions: 5 signature or system-level and 1 install-time. The signature/system share marks it as a privileged component, not an ordinary app.
• Never reported as user-facing, so it runs as a background or system component rather than an app the user opens.