Garmin service center reply me on the OHR issue!

They dont admit the problem. Shame on you Garmin.

Maybe they expect you to press ”Start” when you are exercising? Just maybe, that is how they designed their software.

Just same

When you start an activity I’m pretty sure the OHR takes more readings, I think it’s every second as opposed to 5 seconds when not in an activity to save battery

How dare you post a sensible reply!

The 1st picture from Garmin shows 24/7 HR chart, only the 2nd picture is showing inside-activity HR. Seems to me like they tested it pretty thoroughly under both scenarios and couldn't replicate your problem. Maybe for some reason the 24/7 HR monitoring just doesn't work as well with your particular skin characteristics or something.

I have no idea why outside-of-activity HR works great for some and not great for others. There's no denying that some users are having terrible troubles with it, but at the same time it's working great for many others (like myself). So it's odd, and hopefully at some point Garmin gets to the bottom of it.

I really think they need to implement some user-selectable options for 24/7 HR. Obviously, they crank down the intensity/frequency of HR sampling when not in an activity, in order to conserve battery - so maybe they should give us the option of having full intensity/frequency HR readings 24/7 (at the cost of battery life)? That way, people with good 24/7 HR readings can leave it alone and continue getting great battery life, while others who are having issues can turn on high intensity/frequency HR readings to get better 24/7 HR results.

I know how to press the start button, I’m trying to show the OHR is not picking up current HR when the watch not in activities mode, which is in 24/7 mode.

The first picture you see, one of the Fenix was mine, Garmin trying to show me the watch has no problem, I have no Problem too while I was sitting down watching TV, is it so difficult to see there is some issue in 24/7 mode??? 

THere's also the possibility that the 24x7 HR algorithm is more tuned towards low HR's, as for most fit people they will spend a vast amount of time <110 bpm. That would suggest why MoveIQ is a thing (if it detects an activity it ramps up HR) and why people show these videos of cycling etc and HR suffering when not it activity.

There's obviously a normal HR 24x7 mode (lower sampling, tailored to lower HR) and then an activity mode designed to better pickup higher HR. My guess is they look at hr tables, and took a decision that for >95% of users 24x7 hr is below some threshold and balanced this against battery.

After all, if your HR is significantly over 110 for a large part of the day outside activities, you're heading into tachycardia

I suspect this as my wife wears a Fenix 6S because she has tachycardia and sympathetic overdrive - her resting HR is in the 90's, and for her 24x7 hr is fine unless she gets spikes > 120. She's learnt that if she wants to capture this data for her doctor, to start an activity.

If Garmin do offer an ability to toggle it, it may not come to the Fenix simply because it's an endurance watch and they won't want to ruin that image of it being long battery life. Realistically I'd see this coming to the Venu/Vivoactive 4 and possibly the lower rung Forerunners like the 45.

Who knows though? It may, but batteries are so small in smart watches and people want smaller and smaller constantly....