Sleep tracking differs :/

[OndrejB]

Hello everyone,

I love my Fitbit Surge, no matter I have rash on my left wrist... It's getting better, anyway. But what I don't like, apart from no light / deep sleep charts, is its inaccuracy, when it comes to falling asleep.

1. I wake up & sync, still in bed. It shows in bed 2:59 - 6:04, time to fall asleep: 0m, in bed: 3h5m, actual sleep time: 2h34m. No restless / awake, besides falling asleep.
2. I edit time to 6:00 (when my alarm woke me up), so the "time to fall asleep" updates (why this haven't been fixed yet? :(). Now it shows in bed: 2:59 - 6:00, time to fall asleep: 31m (which seems +- accurate), in bed: 3h1m, actual sleep time: 2h30m. No restless / awake, besides falling asleep.

1. I know I didn't fall asleep before 3:29, so I edit my time to 3:29 - 6:00. Now I have time to fall asleep: 4m (2:59 + 0:31 = 3:30 vs 3:29 + 0:04 = 3:33), in bed: 2h31m, actual sleep time: 2h24m. And also 3x restless besides of falling asleep.

Why does it differ so much? It's all generated from same data, so why it doesn't show restless / awake, until I edit it to 3rd version? 😕 The 3rd version seems to be the most accurate one, because I remember I was restless 2-3 times.

I use Xiaomi Mi Band at the same time, because it can really distinguish between laying in bed and falling asleep / waking up, with unbelievable accuracy.

[awood08]

Check your settings, do you have it set to sensitive? Dominant hand?

I wear my Charge HR on my dominant hand and do not have it set to sensitive.

[OndrejB]

I wear it on my left (non-dominant) hand, sensitivity set to normal. You
can, in fact, adjust sensitivity even after logging your sleep. But it
should still show the same graphs in the middle of night, no matter if I
fall asleep at 6:00 or 6:05, for example.

That's what I am talking about. Fitbit still logs same data, "movement", so
it should produce same graphs based on those data. Now, I have 2 options:
have accurate fall asleep / wake up times or have accurate restless records.