How do I get BT smart heart rate device work with Sleep as Android?
Enable the tracking in Settings → Wearables →Bluetooth Smart (might be hidden under Advanced section).
Try to pair with your device (this may not be required for all devices and OS versions).
Make sure no other app is using your device while sleep tracking.
If nothing helps please send us a debug report using Left ☰ menu → Report a bug.
|BT Smart heart rate tracking only works from Android 4.3 onward|
Tags: tracking, hr, bt_smart, btle