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Sleep tracking is hilarious inaccurate

Former Member
Former Member over 5 years ago

Everything seems to work decent on my Garmin Fenix 6, but the sleep tracking is inaccurate every night. I have the watch for 3 days and it shows 10, 12 or even 16 hours of sleep per night. Is it a firmware related problem? I have the last version installed. Should I make some changes on its settings? How can I fix that? 

  • 0 over 4 years ago in reply to Atharia

    I have similar instances where the watch thinks I'm awake when I'm definitely not. Last night it tells me I was asleep between 1:07 and 8:27am, but that I was awake for 1hr16mins, giving a total of 6hr 4mins sleep.

    I can tell you for sure I was not awake at any point.

    I'm pretty disappointed with the sleep tracking on the Fenix 6 

  • 0 over 4 years ago in reply to Dani Y

    At this point its just laughable that they haven't even addressed it.  The technology is there, other companies have no problem getting accurate sleep data consistently **cough** whoop band **cough**.  Even fit bit has solid sleep tracking.  Hopefully they've been developing behind the scenes because there are so many dated aspects to it.  The app and data presentation could be massively improved.  Really hope they have some solid improvements in the pipeline.

  • 0 over 4 years ago

    Don't know how people are getting so different results.

    Not sure how accurate it's detecting deep, light and REM sleep, but the sleep times seem quite accurate on mine. Usually have a pretty good idea when I went to bed and when I woke up.

  • 0 over 4 years ago in reply to Danny_D

    The sleep times are pretty accurate actually, they just need to work on the sleep stages because my Awake time during my sleep last night was like 1hr 6 minutes and I definitely wasn't awake in the night. Also, for that period where I was "Awake" it counted 230 steps too.

    It's been a year almost since this post was made and Garmin still hasn't been able to improve this. Sleep tracking is as important as the fitness tracking for running, cycling etc etc so they really need to get a move on and fix it. 

  • 0 over 4 years ago in reply to Dani Y

    How can you say the sleep time is accurate and then follow up by saying you had over an hour of "awake" when you weren't awake?  Or are you just saying like the time you fell asleep and time you woke up appear to be accurate so that "duration" is accurate but all the actual data in between is innacurate as far as if you were awake/light/deep/rem stages?

  • 0 over 4 years ago in reply to Bobby B

    Precisely! The second bit to your comment is what I was getting it lol 

  • 0 over 4 years ago in reply to Dani Y

    Yeah I agree, start and stop times appear to be pretty accurate.  All data in between, not so much.  It is weird though how much the accuracy varies among users.

  • 0 over 4 years ago in reply to Dani Y

    No idea how it detects sleep but I'd imagine the accelerometer (movement) plays a part in it. 

    Maybe if you toss and turn during sleep a lot, it thinks you're awake.

  • 0 over 4 years ago in reply to Danny_D

    Overlay Movement on your sleep - this can be done in both GCM and GC inter web. The amount of movement correlates to the stages of sleep pretty well and can explain some of the stages.

  • 0 over 4 years ago in reply to Dr Phil

    Glad I'm not the only one having such poo-poo sleep stats. I too move a lot during my sleep. Since my wife has a LOT less movement recorded, I thought to be quite an anomaly. I once even switched watches with her to see whether it's the watch or not (it's not. I really do move a lot, and I seldom feel like having slept well).

    Philip, may I ask how good your sleep is (subjectively)?