![](https://play-lh.googleusercontent.com/a-/ALV-UjXmS1dURB7cwsM7z6vgZvGgcavxghzUdqVgo7cCElVmnNI7YN8Mzg=s32)
Jackel Poon
Auto heart rate measure doesn’t work, works only on manual measurement. It should be the permission issue, as "always" should be granted for sensors, but this option doesn't exist.
Due to the watch software update to Wear OS 4 watch faces can only measure your heart rate when the watch screen is on (i.e. the watch is not in sleep mode).
We're aware of this issue and will be releasing an update to all of our watch faces so they can once again measure heart rate in sleep mode.