com.samsung.android.kmxservice Copy

Shown on the device as "Knox Matrix", this is Samsung's on-device service for Knox Matrix, the company's cross-device security feature. Samsung's own Galaxy Store listing for this package name describes Knox Matrix as a secure cross-device platform for connecting and using the devices signed in to your Samsung account. Knox Matrix works through Trust Chain, described by Samsung as a secure private blockchain in which connected devices monitor each other for threats: if a device is flagged as seriously at risk, Knox Matrix isolates it from the group and the dashboard offers a recommended action. In our sample it is signed by a Samsung OEM key that also signs the Android framework, a platform-level key. It is a background service with no launcher entry of its own. Samsung's support documentation places the user-facing side under Settings, in the security and privacy section as the device security status view, and also reachable from the SmartThings app. The devices being watched must all be signed in to the same Samsung account, and Samsung documents support for up to 32 compatible devices. For Android Enterprise, EMM and kiosk work the important point is that this is a consumer ecosystem feature keyed to a personal Samsung account, not an enterprise management channel. It is not the Knox Zero Trust Framework and not Knox Platform for Enterprise, both documented separately, and an EMM does not use it to apply policy. On a corporate device with no Samsung account signed in there is little for it to do, but it is still a security component and Samsung does not document the effect of disabling it, so treat it as caution and test rather than removing it as routine cleanup. Version note: Samsung documents the device security status view as requiring One UI 7 or later on Galaxy phones and tablets, with Samsung TVs, monitors and appliances needing software released after 2025, and the Knox Matrix dashboard was presented as a One UI 7 addition. Behaviour on earlier builds therefore differs, and this package was first recorded on this site in June 2025. Whether the service does anything on a device running an older One UI could not be sourced.

• Knox Matrix (com.samsung.android.kmxservice) - Samsung Galaxy Store listing →
• Ver estado de seguridad de tus dispositivos con Knox Matrix (viewing your devices' security status with Knox Matrix) - Samsung Latin America support →
• Samsung One UI 7 Enhances Security and Privacy in the Age of AI - Samsung Mobile Press →
• Package provenance for com.samsung.android.kmxservice - Android System App Database →

• Signed by the device maker's own signing key (Samsung), so it is an OEM preinstall, and that single certificate is consistent across all 18 device profiles. It also signs the Android framework, so it is a platform-level key on its device(s). Inferred from the certificate appearing only on Samsung devices (508 packages, 10196 observations).
• Its largest observed manifest declares 73 permissions: 1 runtime (user-granted), 8 signature or system-level, 7 install-time and 57 vendor or uncatalogued.
• APK size ranges from 20.1 MB to 45.8 MB across the reporting device profiles, so the build differs substantially between them.
• Reported as an updated system app on 12 of 18 profiles - a newer build is installed over the one in the system image there.