fenix 7 heart rate not accurate

yes, it is very simple. really. Garmin has two options:

1. to officially announce that in power saving mode, the OHR is capable of recording a maximum pulse for example 100 beats per minute. if you want more, you have to turn on the activity.

2. add the possibility that the watch, when it detects a pulse approaching this limit (100 heartbeats), will automatically switch to normal mode regardless of whether an activity is started. the user could activate this option in the menu with a warning that it increases battery consumption.

is it that complicated?

Of course  - if you are a Garmin software developer

having same issue now...I'm back using on my instinct 2 and experiencing no heart tracking issues while Garmin looks my Fenix 7

Yes I have the same problems with the HR monitor, tracks my daily HR & sleep but soon as I begin any activity such as running they HR monitor will not go above HR Zone 1, I have done all the suggesting Garmin have presented and still problems, does anyone else have this problem? 

That really isn't the case, OHR tracks my activity out of activity fairly accurately. The out of activity peaks in the chart below are up to 127 bpm.

@mcbit then just wear a chest-strap and see for yourself, that the difference is quite significant, especially when your heartrate is rising without running/walking. So short but intense sprint on a bike for example.

And dubak7 is wrong in his assumption, that his is about power-saving OHR and a limit. This behaviour is purely an intentional algorithm, that correlates the HR to the walking-pace and how fast the HR rises. So walking and running is the only activity that is accurate on any Garmin watch. 

Pull-ups and Push-ups (especially when doing it with no warmup) are the best examples where the OHR fails every single time. Because a rise from 60bpm to 160bpm in a few minutes is just not plausible from the view of Garmin-Developers. So the watch "assumes", if the HR rises quickly but you are not moving, that cant be right.

And on the other hand, if you move your hands quickly in a very repetetive fashion (happens to me when sharpening knifes), then the watch assumes, that you are running and your HR _has_ to be high.

So from the view of Garmin, you have to either walk/run or you have to build up your HR very slowly (at least 5min for 50% increase). and you should not move your arms in a repetetive manner when not doing any exercise.

I wear a chest HR monitor for all activities and it correlates well with every OHR monitor that I have ever used. Not everyone has a problem with it, but I recognise that some do. At rest out of activity the OHR on the Fenix 7 takes a measurement every 15 seconds.

I had that exact problem and sent the watch back to Garmin. They confirmed the watch had developed a fault and replaced it. My new Fenix 7 is operating flawlessly. 

read my posting. It is a proven and undeniable FACT that the OHR only works in specific conditions. When your activitiy style matches that pattern, well good for you! Have fun but leave us alone here so we can actually get the neccessary attention to that failure of Garmin to develop their software.