Charge 6 - Spo2 is not registering

[Cherie73]

Since the last update recently my Spo2 is not registering. Also there is an hour glass symbol with a line through it when the light comes on to read the time. Very small but never happened before this last update 

Moderator edit: updated subject for clarity

[ManuFitbit]

Welcome to the community forums @Cherie73 

Thank you for sharing with me the information regarding this difficulty with your Charge 6. 

Please, make sure your device is running the latest version of the firmware. For more information on updating your tracker, see How do I update my Fitbit device?

Please, try to reinstall the SpO2 app with the Fitbit app on your phone:

1. With your Fitbit device nearby, in the Fitbit app on the Today tab > upper left corner > your device image.
2. Tap Gallery > Apps tab.
3. In the list of apps, tap SpO2 > Install > Install.

You should be able to see your SpO2 trends in the Health Metrics tile in the Fitbit app on your phone. To get SpO2 information, you need to: 

1. Wear your device for at least a full day, including to sleep at night.
2. In the morning, open the Fitbit app and tap the Health Metrics tile.
3. Swipe up to find the Oxygen Saturation (SpO2) tile.

If you still don't receive your SpO2 information, please follow the steps listed here below: 

1. Verify if your Fitbit profile has the correct location and time zone.
2. Open the Fitbit app, tap the upper left corner icon > Charge 6 > Apps > SpO2.
3. Make sure all the permissions are enabled.
4. Restart your tracker to refresh its performance.
5. Tap Today at the bottom of the Fitbit app and pull down on the screen to force a manual sync.
6. Wear your tracker slightly higher on your wrist to sleep and sync it with the Fitbit app once you're awake to check your details. 

[RiekoC]

Hello @Cherie73 

There was an update for the Charge 6 that activated a Status tray feature on your device. That's what you're seeing with those icons. 

[Chelle46]

Hi 

I'm having the same issue no sp02 registering I reboot phone and fitbit every morning which I shouldn't need to really too some days it shows but not always I have had my device exchange due to battery issue since the replacement I've had niggles with it 😔🤔

[Blackcat8499]

Im also having the same issue, I have restarted my watch, uninstalled and reinstalled both the spos2 app on the watch and the app on my phone. Didn't happen till the new update that happened.

[DQuirke]

Hi ManuFitbit, Thank you for your reply. I am an expeirenced fitbit app user for many years. I have tried all of your recommmednatsion many times. The simple fact remains that SP02  has not been available on my Charge6 since last software update 24 April 2025. There are a number of similar discussion threads on his forum and all indicate that latest firmware update has removed support for SPO2. Please can you ask Fitbit development team to investigate. Thanks

[RiekoC]

Hello @DQuirke , @Blackcat8499 , @Chelle46 

According to this post (<-- click link), the Moderator acknowledged on 19 Jun 2025 that there is an issue and it's been escalated to the team. However, there isn't a timeline for the fix. Most likely, the fix will come in an app update.