Android’s Companion Device settings play a vital behind-the-scenes role in how your smartphone interacts with external devices like the Galaxy Watch, Pixel Watch, and Bluetooth trackers (e.g., Tile or Samsung SmartTag). These settings determine how companion apps behave on your phone, manage battery usage, handle background processes, and maintain persistent connections with your wearables or accessories. In the context of companion device settings Android uses a specialized system to grant background access and connection stability, allowing apps to function seamlessly without constant user input. Understanding how Android treats companion devices helps explain why some apps remain active in the background, get access to notifications, or bypass certain restrictions.
What Are Companion Device Settings?
Companion device settings refer to Android’s system-level configurations that apply when a trusted or linked device is paired with your phone. These devices include smartwatches, fitness bands, audio wearables, and Bluetooth trackers. When a device is registered as a companion, Android grants its associated app special permissions to operate smoothly in the background—even when the phone is idle or under battery-saving modes. This mechanism is managed through Android’s Companion Device Manager (CDM), introduced in Android 8.0 (Oreo) and enhanced in later versions.
How Companion Device Settings Affect App Behavior
Persistent Background Access
Companion apps are typically allowed to run background services continuously without being killed by the system's battery optimizations. This is especially important for watches and trackers that rely on real-time syncing, health or step tracking, and alarm or reminder syncing. For example, the Galaxy Wearable app or Pixel Watch app stays alive in the background to ensure your wearable receives notifications, updates, and data syncs instantly.
Battery Optimization Exemptions
Normally, Android aggressively manages battery usage by pausing or restricting background activity. Companion device apps can bypass Doze Mode and App Standby, giving them more freedom to operate even with the screen off. This ensures that Bluetooth trackers (like Tile or SmartTag) can keep scanning for your items or updating their last known location in the background.
Special Permission Handling
When a device is registered as a companion, its app may be granted access to notification content, permission to read calendar or contact data, and easier integration with system settings like Do Not Disturb or alarm access. For instance, smartwatches often mirror your phone's notifications or calendar alerts using this privilege.
Secure and Trusted Connection
Android limits how apps can interact with system-level Bluetooth profiles. By declaring a device as a companion through the Companion Device Manager, the system allows a secure and stable Bluetooth connection without requiring constant user permission prompts. This improves reliability for fitness wearables, headphones with app control, and tracker devices.
Foreground Service Access
Apps paired with companion devices can launch foreground services with persistent notifications (like syncing icons or battery status). This keeps users informed and allows the app to stay active without being terminated.
Real-World Examples
Galaxy Watch
Stays continuously connected to the phone through the Galaxy Wearable app, which can sync health data, notifications, and app settings—even while the phone is idle.
Pixel Watch
Uses the Google Pixel Watch app, benefiting from battery optimization exemptions and notification access for seamless Wear OS integration.
Bluetooth Trackers
Apps like Tile or Samsung SmartThings Find are allowed to scan and update tracker locations in the background, helping users find lost items without needing to manually refresh.
Can Users Manage These Settings?
While most companion device behavior is configured automatically when you pair a device through its official app, users can check and manage some of these settings. Go to Settings > Apps > Special app access > Battery optimization to confirm if the app is exempted. Open the companion app and check permissions for location, Bluetooth, and notifications. In Developer Options, advanced users may review foreground services or background processes tied to companion apps.
Conclusion
Companion device settings in Android ensure that wearables and tracking devices function as expected without being hindered by the system’s default restrictions. By giving trusted devices and their apps special privileges—like background access, notification control, and battery exemption—Android allows users to enjoy seamless integration between their phone and external hardware. Whether you're using a Galaxy Watch to track your steps, a Pixel Watch to receive calls, or a Bluetooth tracker to find your keys, companion settings are working quietly to keep everything connected, updated, and responsive.
