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Inaccurate Sleep data

‎04-01-2026 20:01 - last edited on ‎04-27-2026 16:02 by Fitbit Moderator

‎04-01-2026 20:01 - last edited on ‎04-27-2026 16:02 by Fitbit Moderator

I have had the Pixel Watch 4 since its release. I have been a Fitbit Premium member (using the public preview) since that time as well. Since getting it, my sleep logging has been very consistent. Starting on 3/24, it shows me awake 90+% of the night .. and that is NOT correct. It has the right going-to-sleep and wake-up times, but the data is trash.

I have the SoundCore Sleep A20 and A30 sleep headphones, which I wear every night. They also monitor your sleep, and there has been no change in the numbers reported by them .. only the fitbit has tanked. The numbers reported by them are consistent with no major changes, as I had with fitbit starting on 3/24. (Not debating how accurate the headphones are, just that they are/have been consistent).

I have factory reset the watch, cleared the cache in the app, uninstalled/reinstalled the app, and even tried the sensitive vs. normal sleep logging settings, but nothing has made a difference.

I know that Google just announced the updated sleep-tracking algorithm, and I fear that it is the cause of my issues.

Is anyone else seeing worse sleep tracking since the upgrade?

*Note before it gets mentioned.. Nothing has changed. Same sleep environment, same watch band/tightness (though I have even tried tighter), same location on arm, and the same bedtime routine.

Moderator edit: formatting

Moderator Edit: Clarified subject

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21 REPLIES 21

‎04-26-2026 00:58

In response to eMonkey64

‎04-26-2026 00:58

The sleep data algorithm changed about a week ago for me. Since then my score has dropped by about 10. My sleeping heart rate average is 70, although it only reached that for about a minute as I was starting sleep. It was below that (between 64 and 56) for the rest of the night s no way the average can be 90. To me it appears that it is recording the peak HR rather than the average. 

Added to that all other signals are good and same as before but my sleep score has dropped since the it makes no sense at all and I no longer trust the data. 

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‎05-01-2026 18:56

‎05-01-2026 18:56

I received a replacement device his week (because of this problem).
It's no surprise that the replacement has exactly the same problem.

Clearly the issue is software/firmware and just seems to go on and on.

I've just cancelled Premium - no sense paying for something that doesn't work.

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