Galaxy watch 4 classic no deep sleep on sleep tracking

[Rolotomasee]

Hi, 

Anyone else have this issue where galaxy watch 4 classic records very little to no deep sleep? 3 mins some nights out of 7 hours total sleep. Wore an old fitbit charge 2 one night with the galaxy watch 4 classic and fitbit reported 1hr 20mins deep sleep, galaxy reported 20mins. Any ideas how to fix this? 

[blenky]

I had an Active2 for 2 years and sleep tracking stats always showed very little deep sleep. I assumed it was me. Same on new watch 4. If it differs from other trackers then either their software is incorrect or else Samsung's!

[BinSunnyFL]

My first Watch 4 44mm recorded no deep sleep time.  I've worn a Fitbit Charge 3 every night for the past 2 years.  I usually get between 45 and 1.5 hrs of deep sleep.  So, I took the first Watch 4 back and got another one.  This one records between 0 and 10 minutes of deep sleep.  Just for comparison, I wore them both to bed for a couple of nights.  Normal results on the Fitbit while the Watch 4 recorded in the 0-4 minute range.  Something is definitely off with deep sleep tracking with these watches.   What's really interested...the only time I've taken a nap since purchasing the Watch 4 was yesterday.  I slept for 1hr 4min and it recorded 22 min of deep sleep.  Not sure why it isn't picking up deep sleep at night.

[Brandon123]

Placebo effect had me grumpy as hell. Glad I'm not the only one getting completely ripped off by Samsung 

[Keen]

Same here, 1 time max deep sleep only 6mins, other days 0 mins deep sleep over the whole 1 week. Just bought the watch 4 classic on last Friday. Samsung, please fix this issue. My Mi Band 6 pick up the deep sleep avg 1 hour to 1.5 hours daily. 

[zagladacz]

Same problem here. Almost no deep sleep tracking.

[HimUseTechnology]

Same issue. Some days are worse than others. What's odd is on days I sleep terrible, it reads more deep sleep time, and then on a good night, like last night, 8 hours and 26 min of total sleep and it says I had 0 min of deep sleep. Can't be right.

[FrankB4]

Yes, I am a multi-year Fitbit user and there is a big difference in deep sleep recorded on the Watch4... Almost zero every night and I have worn both devices in one night to confirm the difference. I have a very low resting heart rate and am guessing there is a problem with the Samsung algorithm detecting deep sleep in that case.

[Vlad Andrei]

I have the same issue, for the past 3 weeks since I got my watch 4 classic, the minimum is 2minutes and maximum about 34minutes, while with other devices I get way more tracking on deep sleep, samsung has to fix this, we pay premium money for cheap unfinished software

[Faodave]

I'm getting that now, only records a few hours out of the 7 to 8 hour sleep and virtually no deep sleep. I guess hope for a firmware update, wonder how many are like this. 

[Faodave]

All the above issues on mine and some, come on samsung 😞