'Mi band only' heart rate detection mode.
When I select 'Mi band only' heart rate detection mode a popup tells me that the detection frequency will be increased during workouts/ exercise for better accuracy of results. The band interprets even the most basic actions like typing or even tidying up a desk as workout and the heart rate is checked every 5 seconds or so.
Is this really not a N&F app option as the popup mentions? Because when I use the MiFit app the frequency is not changed even during workouts. I have even observed missing values for heart rate during sleep.