In Mi Band 2 heart rate can be measured to improve sleep analysis.
Same option ticked in Amazfit Bip does not track heart rate. Nor is it improving the sleep statistics. Any help?
I have the same problem. But only after last firmware update.
For me it worked flawless with the setting at 15 min. interval.
During the night it still checks and stores the heartrates.
But i am not sure if that changes the sleeptracking info.
With last software update it works (5.5.14).