Charge 6 stopped tracking sleep

[Astarte01]

All of a sudden my Charge 6 (relatively new) stopped tracking sleep so I am no longer getting a sleep score.

I tried the reset to no avail. Any suggestions?

[Pglider]

same here, experienced the same with my Charge 4, two Charge 5’s, and now the Charge 6. After a few months the trackers stop recording sleep. Absolutely nothing will help, and I tried every trick in or out of the book. ------------

Moderator edit - word choice

[cawauk]

On a serious note, can anyone here from Fitbit offer a view of when this will be fixed? As mentioned I see it is directly linked to no breathing rate. Is this a hardware fault? A software fault? Or a cloud data processing fault?

In one of my previous posts, I mentioned that one night I slept 7 hours, woke up, synced in the app, Fitbit failed to provide deep analysis and score, but I fell back asleep for 20 mins, woke up, synced again and suddenly all the deep analysis data came to life, with sleep score, for the full 7h20 sleep I.e. the data was there for the first 7hrs, the app just didn't process it to provide sleep score and stages.

Do I need to RMA my two month old watch?

Thank you

[Pglider]

The mods here seem to be much quicker in deleting/modifying posts than providing ans answer to our sleep score problems.., pity

[cawauk]

Yes, I noticed! Received your full response by email including the parts deleted by moderators. 

Honestly Fitbit, we'd appreciate some constructive response. Happy to submit my data for bug fixing, but everything seems to point to hardware issues or server processing issues. Why do sleep stage and scores need breathing rates? As mentioned, there appears to be direct correlation between missing breathing rates and lack of detailed sleep analysis. 

[RiekoC]

Hello @cawauk 

it seems to me that it takes some time for the app algorithms to sync, calculate, & display the sleep data. I notice that my sleep data doesn't appear when I sync first thing in the morning, then shows up within 20 minutes or so. It used to be that if I edited my sleep log start or wake time, it would take at least an hour for the app to update my sleep data, including score & stages graphs. Now, it takes about 5 minutes or less for the app to update. 

To me, it was most likely that the algorithms hadn't finished processing your sleep data until your second sync. 

Your sleep score doesn't use your breathing rate data. This help page (<-- click) states that your sleep score is based on

• Time asleep
• Time in Deep & REM stages
• Restoration (time your sleep heart rate is below resting heart rate & movement during sleeping)

I'm not sure why you're not seeing your breathing rate and your detailed sleep analysis. It doesn't seem to be an issue with the heart sensor since you're getting your heart rate data. Your device uses the optical heart rate sensor to determine your breathing rate during sleep. 

For now, please submit this issue using the Feedback option in the Fitbit app:

• Tap on your picture/avatar in the upper right of the Fitbit app
• Tap on Feedback in the menu that opens
• Complete the prompts & submit

The team receives the feedback reports for review. 

[SunsetRunner]

Support will tell us we're not breathing all night.

Seriously, they tried telling us it's because we grew hair and got tattoo's in a previous post.

I've given up on them ever fixing this. Charge 4, Charge 5 and now Charge 6 having the same issue randomly. Apparently I don't breathe at night

[EakchaiV]

Absolutely!

[mgmorse]

I have had the same problem since August 11.

[RiekoC]

Hello @mgmorse 

Please give us some more details about the sleep tracking issue you're experiencing. What troubleshooting steps have you tried so far?

[mgmorse]

I rebooted the Charge 6 and did a number of other tricks that were suggested online and the device is recording again. It did not have any data stored from the two week period that I couldn’t get it to sync, but I’m okay with that. I have been a Fitbit user for over a decade and the Charge 6 has been more finicky and problematic than previous iterations. I’m looking at alternatives that are on the market, in case the problems recur.

[dtg]

I no longer use Fitbit.
Sent from my iPhone

[GSG]

I’m having the same problem…I tried rebooting and everything seems to be working fine except my sleep score (which I check every morning) and my heart rate isn’t working since yesterday 09/25/25. 

[RiekoC]

Hello @GSG 

Since you mention that you're not seeing your heart rate in addition to not getting your sleep score, I suspect that your heart rate sensor isn't on. 

Do you see a green light on the back of your Charge 6? That's the optical heart rate sensor. 

If you don't see a green light, the first place to check is the Settings tile on your Charge 6 and confirm that Heart rate is turned on:

• Swipe down from the clock face until you see the Settings tile (last one) and tap on it
• Swipe up to get to Heart rate and confirm that it's turned on. If not, tap on it to enable. 

[mgmorse]

Thank you

[Kat230612]

It has been quite a while since I made that post. I still haven't figured
it out. It is very intermittent. Just when I think it's finally working,
it stops again. Unfortunately my solution has been to stop looking at it

[wyatt.dowling]

Well, from the comments on this thread, it looks like as of September 2025 there is still no solution to this Fitbit Charge 6 randomly stopping sleep tracking. I get partial, incorrect tracking of some morning hours -- none of my evening sleep. I get no sleep score, no readiness score -- basically nothing I paid for and wanted or what I'm paying EXTRA for in the subscription. I'm going to try to return this tracker and get a replacement, and if that doesn't work -- no more Fitbit. It's annoying seeing all these comments of people explaining the simple issue, and getting responses like, "do you have a tatoo?" No. It's not the customer, it's the device Google.

[tahfit]

Nothing helps What do I do now,Buy anotherbrand

[cawauk]

I never returned to this forum, but should have posted that after my venting here my Fitbit charge suddenly came to life and began providing full sleep tracking with scores and had done so consistently since. 

I think the only thing I did was to fully reset it and re-pair it again. Originally, straight out of the box, two back to back firmware updates took place, and I had all the problems from day 1.

After venting on this forum, I unpaired the device, performed a full reset of the Charge 6, uninstalled and reinstalled the app, and repaired the device, (no firmware updates this time as they were already installed) and everything has been working like clockwork since.

[wyatt.dowling]

Really appreciate this. I'll try this. Of the billion things I tried, I
didn't uninstall the app and reinstall. Crossing fingers.

[Kat230612]

My charge 6 has now stopped connecting at all, to any device. I think the
Bluetooth has died. Just a little over a year since purchase. Great job
Google, ruined another device