This feature, discovered in the code strings of Android 15, suggests that the system may automatically re-enable Bluetooth after a period of time if it has been turned off. This is to support the Find My Device network, which relies on Bluetooth signals to locate devices.
The Find My Device network is similar to the Find My app on iOS, which helps users track the location of their lost or stolen Apple devices, even when they’re offline or powered down. Google’s version has been more basic, lacking the ability to find phones without an active internet connection. However, Google is gearing up to add this feature, which will rely on Bluetooth signals from potentially billions of Android devices to trace a device or an accessory even when it’s offline.
However, users should still be able to turn off their device’s Bluetooth and ignore the Bluetooth auto-on toggle. In that case, the phone won’t help track lost or stolen Android devices in the new network, but it helps to extend battery life. Another informative string discovered in the Android 15 beta explains that, as always, apps can still scan for nearby devices, even with Bluetooth off. When Bluetooth is on, your device can communicate with other nearby Bluetooth devices.
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