The way sleep tracking and sleep mode work is severely flawed and I can't find any reasoning behind it.
1) Sleep Schedule can not be turned off
2) Sleep tracking does not turn Sleed mode on when it detects sleep
3) Sleep tracking does not turn Sleep mode off when it detects that sleep is over
These 3 issues also overlap. Let me give you some examples:
Let's suppose I have set my sleeping schedule to be 00:00-08:00. If I go to bed earlier than that, say 22:00, the watch will detect I am sleeping and record it, but it won't turn sleep mode on so any notifications I get will wake me up. If the watch knows I am sleeping, why is it not smart enough to go into sleep mode?
So, no problem you say, I can activate sleep mode manually. So I go to bed at 22:00 and activate sleep mode. Let's say I sleep in for a few hours extra, so I wake up at 09:00. Guess what the watch does? It turns off sleep mode based on the schedule. So any notification I get after 08:00 will wake me up. Mind you, the watch knows that I am still sleeping.
What if I wake up earlier than the schedule? Glad you asked. The watch knows that I woke up, but refuses to leave sleep mode unless I manually end my sleep or wait until the time passes.
So, let's do a workaround. Let's put the schedule at say, 02:00-02:01. Guess what happens then? I go to sleep, enable sleep mode manually, and by 02:00 it 're-enables' sleep mode and one minute later it disables it completely.
The only real workaround so far is to set the schedule on a day time period (that I hopefully won't be sleeping at) like 17:00-17:01 and just manually use sleep mode all the time.
For such an expensive watch that can actually automatically track my sleep, not having the ability to switch to sleep mode by itself completely baffles me. There is also no excuse in not having the ability to completely remove scheduling. My cheap huawei does an excellent job tracking my sleep without me having to do anything manually nor do I give it any schedule. I have never actually seen any other smartwatch having such a severely flawed logic for this.