com.samsung.android.setting.multisound Copy

Labelled "Separate app sound" on the device and signed by the Samsung OEM keys that also sign the Android framework. It is the Settings module behind the Galaxy feature of the same name, which Samsung documents at Settings > Sounds and vibration > Separate app sound: it sends one chosen app's media audio to a different output device while everything else keeps playing through the phone's main output, so a navigation app can stay on the handset speaker while music plays through a car or Bluetooth speaker. Samsung notes it only works when the selected audio device differs from the device's main audio output. Its recorded permissions match that role and nothing wider: modifying audio routing and audio settings, Bluetooth connection and admin, and writing settings. Version note: Samsung documents the feature generally rather than against a named release, and says that some features are available on certain models only because of hardware limitations, so presence is a per-model question rather than a per-Android-version one. In our sample the package appears only on Samsung devices, across API levels 28 to 37, with no sign of the role changing over that span. We could not source a release in which its behaviour changed. For Android Enterprise, EMM and kiosk deployments it has no enrolment, security or management role. On a kiosk or dedicated device the Settings entry is normally out of reach anyway, so the feature is inert rather than a risk. Disabling it should remove only the Separate app sound entry and leave ordinary audio routing alone, but we have not verified on hardware what else on a Galaxy build reads it, so treat removal as a per-fleet test rather than a safe assumption. On staff handsets it is a user convenience worth leaving in place.

• Useful audio settings on the Galaxy phone including Separate app sound - Samsung UK →
• Package provenance for com.samsung.android.setting.multisound - Android System App Database →

• Signed by the device maker's own signing key (Samsung), so it is an OEM preinstall, but 2 different certificates appear across the fleet, so OEMs ship their own builds of it. 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 15 permissions: 1 runtime (user-granted), 4 signature or system-level, 5 install-time and 5 vendor or uncatalogued.
• APK size ranges from 3.0 MB to 12.3 MB across the reporting device profiles, so the build differs substantially between them.
• Never reported as user-facing, so it runs as a background or system component rather than an app the user opens.