Measuring pulse ox; check watch fit everytime

ox measurement is quiet sensitive. If you move the slightest during spot check you get that message.

However, once it gets going, it isn't that sensitive anymore and works even if you move. Like the breathing, the intial startup measure is tricky, but once it starts showing results, it keeps going.

That is just my experience, yours is different so it might be faulty.

Thanks so much for coming back to me. I'm on the phone to Garmin at the moment, but will try doing it whilst super still. Thanks again

If you've updated to the newest 3.4 firmware, do a restart on the watch.  Had a similar issue with Ox readings in general and that seemed to correct it.

In my experience it's a watch fault. I had the same issue and, after replacing the watch, now everything works fine.

Thanks all for your replies. 

Garmin have asked for the files to be sent to them, seems as if a few people have had the issue, which they believe to be a software issue. 

I've updated to the latest software, and done multiple restarts, but to no avail....

Same issue here. No heart rate and no Ox reading when Pulse Ox is turned on. Sent an e-mail to Garmin a couple of days ago without response. Seems Garmin had similar issues with other smartwatch models..

Have you found a solution?

Will return the watch to the shop if not resolved by tomorrow.

Hi. I spoke to Garmin - usually find the response better when I call as opposed to emailing. 

It's a known software fault. I've sent the files from my watch to them. This is the response I've received (yesterday):

We have added you into an open investigation which will be used to determine the cause of this issue. Using the information provided they will test and reach a suitable resolution which will then be supplied to you directly by email.

We cannot provide a time frame for this process as it depends on what is discovered during the investigation and what is required to resolve the issue.

Any updates will come to you directly via email as an affected user of this case.

Ok thanks, although the response and lack of timeframe is not very satisfying. If it was a software issue, shouldn't it affect all Vivoactive 4 users?

That's what I thought....and I said to them that I was going to take my watch back for a replacement, however they said that they couldn't guarantee I'd get a watch that would record it. I don't think they know what the problem is, but they were fairly confident that it is software not hardware. I'm risking keeping mine until they have a fix. Always feels better when there's a group of people with the issue. Thanks for reporting it - the more that do, the higher priority it will get. 

Also have exactly the same issue.  Reported it via e-mail.  Still awaiting response from garmin.