Suunto Vertical 2 – Bluetooth issues: connection loss after a few minutes and/or after stops”

enneo

Same here! I need to disconnect and reconnect the sensor in order to restore its functionality. I have only a single Suunto HR belt.

Hardware
Pixel 8a
Android 16

Suunto Smart HR belt

App version 6.7.12

Watch
Race
Software version v2.53.42, installed 7 April 2026

Previous versions
2.50.28 same error as in the current version
2.50.26 same error as in the current version
2.48.16 no dropouts

Logs sent at 19.28 CEST

Screenshot from yesterday:

manno02

Still it isn’t possible to send the logs to suunto

manno02

Logfiles successfully sent at 10:26

isazi

@manno02 wait, the Suunto HR belt has only one Bluetooth channel, so it can only connect to one device at the time

SuperFlo75

I know these dropouts since November 2025, as I updated to 2.48.16… for me, the Suunto HR belt is useless since that time… it began on SV1 with 2.28.26, but it’s also present on my SV2 wich I bought 01/26… I posted this problem several times here in the Forum… But actually I doubt that someone is concerning about this problem

manno02

@isazi

Yes that’s true and that’s why I shiftet to other HR from COROS and Polar.
But if I select the suunto belt on the watch before a workout, the watch should keep catching the signals of the selected sensor
It seems to me that the sv2 has a problem with handling the signal and priorizing
As I said it worked very fine without the suunto belt and with different other HRs before the update tragedy that startet in Novemwr when the watch got trouble on IOs machines. But that is another point

Elmiuel

Hello everyone, same problem here (again) because a while ago Suunto’s technical service replaced my Suunto belt due to the same connection problems, after approximately 6 months of use of the Suunto band.
Tomorrow I will completely disconnect the band, install a new battery (after resetting the Suunto band) and then test it again with activity.
I’ve also considered that it might be possible using “Sports Mode Customization” after the last update a few days ago…it’s a shame and quite strange because.
Today I even started experiencing watch restarts when I unpaired the power meter from the bike, as I was ruling out sensors. After a 55-minute activity, it started disconnecting again approximately every 2 minutes.
I’ve attached images showing the clock reset and error message, in case it provides any useful information.

isazi

@Elmiuel how long has passed from the crash? Can you send logs?

Edit: I see it was yesterday, not sure anything can be done now

Elmiuel

@isazi
Hi Isazi. I’m going to try changing the battery to 2025 and resetting the Smart Heart 30". I don’t think that will be the problem “I hope I’m wrong”. I’ll also try with an external band from COOSPO brand with my watch and the watch’s native sport mode.
Today, April 10th at 5:01 PM, I sent a registration to Suunto… Update of both the App and Vertical Clock 2 to the latest public versions.
If I don’t resolve this issue by Monday, I will send my Suunto Smart Belt Heart external chest strap, which is still under warranty, to the technical service…

Elmiuel

Hi everyone. So, I did a test with two different types of external heart rate monitors: the usual Smart Band Heart Belt and a supposedly inferior brand called “Coospo.” It was disappointing. I even recorded an activity that didn’t require GPS (dancing) for the test…
Using the Suunto strap, after a few moments…

Now with an external one, Coospo brand…

In my case, it’s clear: my original headband, after being serviced and replaced (theoretically) with a new one, has stopped working again after 7 months. I’ve tried hardly washing it… only by hand. I’ll send it to the repair shop tomorrow, as it still has a year of warranty left. After that, I’ll sell it in case anyone wants to continue the crusade . I’m going back to the Polar H10…