Apple Watch Ultra + Polar H10 continuously disconnects via bluetooth, any ideas?

Hi there, I don’t know if this will help your situation, but I was absolutely furious, trying everything to get it to work. I even returned an Apple Watch and H10 thinking one of the systems were screwed up. But I just got my new one and realized that you have to be wearing the strap in order for the Apple Watch to pair with it via Bluetooth. I was trying it with just the sensor clipped onto the strap, but without having it on. And that wouldn’t work pairing-wise. I hope this helps someone who is just as furious as I was before 😡☺️

TRY THIS to know definitively if your heart rate is coming from your Polar H10 (even if it says it's not connected):

1. Open the Health app from your iPhone
2. Go to your latest heart rate info (there are a few ways to get there, but going to Browse-->Heart-->Latest is how I do it)
3. Once there, scroll down until you see Show All Data (see screenshot) and select it
4. On the next screen you should see All Recorded Data, select an entry from there that corresponds when you were wearing your H10
5. On the Details screen, the bottom half under Device Details will tell you if it was coming from your H10 (see screenshot)

I have used the Polar H10 successfully while running with my apple watches for years without major issues, currently with the Ultra 1. Occasionally, it will show as "not connected" in Bluetooth settings when it should show connected (wearing the strap, etc.) Forgetting the device and adding back usually resolves. But I've noticed that even though it says that under Bluetooth settings it actually was working for my whole workout.

Regardless, you can use the steps above to find all the sources of your health data at any point in time...I have found it very helpful for all kinds of devices. Hope that helps! ☺

LD150 wrote:

Simple answer is you cannot connect H10 to Watch

This is incorrect. The Polar H10 is compatible with Apple Watch.

Connect Apple Watch to Polar H10 - Complete Guide - SmartWatchAdviser.com

Why it keeps disconnecting, I cannot say. The solar H10 may need a firmware update.

https://support.polar.com/e_manuals/h10-heart-rate-sensor/polar-h10-user-manual-english/manual.pdf

Did you check Watch, Settings, Bluetooth, Devices that the H10 might need forgetting?

Did you try unpairing Watch and setting up again?

First , disconnecting your polar H10 on your iPhone , then connect heart rate sensor via bluetooth on your Apple Watch . By this way , heart rate show on Apple Watch ( Heath App ) will be polar H10 , try it .

Thanks for this tip. I’ve got an Apple Watch 8 and a H10 chest strap. I thought it disconnects too but after looking at the health data you can see there is a reading from H10 for every second of your workout. The Apple Watch sensor does not capture data that frequently. In short: if you see 60 records per minute you know it’s coming from the H10.

It’s a few years since I had a H10 but check with them about shorting out the contacts before putting the battery back to reset it.

I have an Apple Watch series 1 and a brand new Polar H10 and it’s currently paired and measuring my heart rate via the strap not my watch. You can tell b/c Polar takes constant measurements while Apple Watch does every few minutes. However, it does keep losing its connection and takes patience to to re-pair. Turning Bluetooth on and off on the Apple Watch sometimes helps. Forgetting Polar H10 and then pairing seemed to help, but not consistent. Requires lots of patience. Will try keeping Polar wet per other posts.

Hi sgs31,

I just posted a reply on this thread with screenshots and steps on how to get there.

Apple Watch Ultra + Polar H10 continuousl… - Apple Community

GL!

I’m having the same issues. A couple of other bits of colour to add to this thread.

My H10 worked fine with my old Apple Watch 6. It was when I switched to a new Ultra 2 that Polar kept disconnecting.

Heres the odd bit though….even though according to the Bluetooth screen in my watch, the H10 has disconnected, when (post workout) I look at the data via the Health app, I can see that it says all the heart rate readings were “sampled” by the Apple Watch but the “device details” were the Polar H10….

As for my experience with the Apple Watch 5 and the Polar H10, Bluetooth connection hasn't been reliable. So I reactivated my old Garmin Forerunner 235 which connects to the H10 by ANT. It works perfectly. I love my Apple Watch but for running I prefer the Garmin. Also, operating the buttons is much easier on the Garmin. Please, Apple, make your great Watch a great running watch!

My bad! Thanks, and noted for future.

I wouldn't want to, too many problems spitting on my H10 and using saline gels trying to get it to work reliably. I moved to optical sensors, first on Polar then the best of all, Watch on its own.

I have the same issue with my awu2 and H10… I have been in contact with Apple support but they say it’s not an issue on there end. Awaiting a reply from Polar support. This is very frustrating as I train via HR.

Watch 7. Didn’t stay connected to garmin, bought new Garmin strap with updated Bluetooth still very intermittent appeared to disconnect. Built I works better if I make the strap very tight but still intermittent.

Similar issue. I was able to connect my AW9 to the H10, until I had to change the battery on the H10. Now, it sees the H10, but won’t connect. (I can connect the H10 to my phone, so it doesn’t seem to be a Polar issue).