Question Warning, if oxygen level falls below 80% - Samsung Galaxy Watch 4

Hello
I've set my new Galaxy Watch 4 to monitor my O2 level during sleep.
In the morning, I saw in the report, that my O2 level dropped to 78%, which is very concerning.
Normal O2 level should not drop below 90%. During my sleep, my O2 level was 5 minutes below 90%.
Can I somehow tell my watch to wake me up, if the O2 level drops below a certain point?
Can I request this feature somewhere at Samsung?

Ubimo said:
Hello
I've set my new Galaxy Watch 4 to monitor my O2 level during sleep.
In the morning, I saw in the report, that my O2 level dropped to 78%, which is very concerning.
Normal O2 level should not drop below 90%. During my sleep, my O2 level was 5 minutes below 90%.
Can I somehow tell my watch to wake me up, if the O2 level drops below a certain point? I think, I have sleep apnea.
Click to expand...
Click to collapse
Smart watches aren't terribly accurate at measuring your oxygen saturation. Get yourself a finger pulse oximeter at any drug store.
If your SpO2 is indeed falling below 90%, you need to see your healthcare provider.

My watch reports O2 levels below 90 literally every single night. Many times before 80 as well. I wouldn't put too much concern on it.

If you are overweight or obese, it may be result of sleep apnea.

Snoring? Use a cpap as i do

Have it checked by a health care provider before drawing conclusions from the watch

As said before, see your healthcare provider. You don't necessarily have to be obese or overweight to have sleep apnea. Untreated SA can cause so many more problems. I had no idea until my body started retaining water at a scary rate. The newest CPAP machine are super quiet if you think the noise would keep you awake. Personally I actually enjoy having the air pressure as I sleep.

V0latyle said:
Get yourself a finger pulse oximeter at any drug store.
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Click to collapse
Even this does not guarantee propper measurment. I tested 2 different devices from drugstore ( to feed my curiosity ) and differences were significant between them: +/- 10%.
Even the glucometers have accuracy +/- 20%

A good finger oximeter to register all night is more than 150 -200 $

Look at apnea forum for more info

To "Accurately" measure your SPO2 you have to wear your watch tight on your arm , sensor has to be clean , no arm Hairs between sensor and Skin, and you have to be still . Can you do all that while sleeping ? I doubt it . Sometimes you want to measure during the day and it tells you put your arm on table bring it near hearth , you have to tighten it ... I'll prove it . Put your watch loose around your wrist and measure spo2 . You will get error or it will show below 90

Related

Variable Battery Usage

I wear my S2 24/7 except when in the shower or charging. Sometimes only 20% of battery usage happens during the day and 5% at night, other times those numbers can be doubled or even more. I have tried everything to try and figure out what is different when there is higher battery usage. I even did a factory reset and only reinstalled those apps/clock faces I actually use. The only thing that seems to make a difference is charging, if it is using a lot of battery and then I charge it things seem to go back to low battery usage.
I have wireless and nfc turned off, no auto heart rate, and no ambient watch face. At night I turn on Do Not Disturb. I use brightness setting of three which is fine with the watch face am using these days (Exile Blue by Fischbein).
Anybody else see this sort of variability and any ideas of what causes it?
Thanks,
Fred
I wear it 24/7 except with already mentioned and sometimes gets bad battery but never turned off auto heart rate. Honestly the watch can last me 24 hours, not sure how people can get more except without using the watch at all. I know at night, I will turn on power save which helps tremendously. I'd say turn that on throughout the day, you just won't have nice face or use apps except phone and message
I've noticed that it really matters hat watchface you are using. My settings and usage are identical to yours. With the "Modern Utility" watchface I get out about 48h.
With the "Dashboard" watchface, which has no animation, it's steady 60h. So if you swap them throughout the day - that's the explanation.
dadonev said:
I've noticed that it really matters hat watchface you are using. My settings and usage are identical to yours. With the "Modern Utility" watchface I get out about 48h.
With the "Dashboard" watchface, which has no animation, it's steady 60h. So if you swap them throughout the day - that's the explanation.
Click to expand...
Click to collapse
Thanks.
Mine is variable without changing the watch face which is what is confusing. By the way, I have the seen the same behavior with both a Sport and a Classic.
I have been thinking about writing an app that tracks battery usage over time and creates a graph. I wonder how hard that would be. Might be a fun project.
Fred

Auto HR (Heart Rate) of the Gear S3 isn't satisfying, I will return the product!

The Auto HR (Heart Rate) of the Gear S3 isn't satisfying, it only takes (measures) 1 time every hour, the Gear S2 did that every 10 minutes! What a huge step back from Samsung, I just hate it! Will send back this item to Amazon, what a shame
Bit of an extreme reason to send it back. Check your settings etc... anyway
Mine records a measurement every ten minutes and stores it in SHealth.
Lakota said:
Bit of an extreme reason to send it back. Check your settings etc... anyway
Mine records a measurement every ten minutes and stores it in SHealth.
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We don't have the possibility to change how often we want to measure! We only have the option Auto HR on or off, this is ridiculous! Mine only measures every hour :/
Mine measures every 10 mins pretty reliably. I know I've seen the setting for this somewhere but I honestly can't find it now, I'm sure someone else can tell you where it is.
memo357 said:
We don't have the possibility to change how often we want to measure! We only have the option Auto HR on or off, this is ridiculous! Mine only measures every hour :/
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Click to collapse
Mine does every 10 minutes too. But it's not a heart monitoring watch. It's an added feature on a watch with a million other features. "Ridiculous" that it does not have specific adjustment details that a relatively small fraction of the customer base probably needs? I agree that's probably a bit harsh!
If THAT is the one feature that is a deal breaker for you, yeah, you chose the wrong watch. The accuracy on any watch HR monitor is questionable anyway. And you can do it manually whenever you want. How much data do you need?
Return your gear and get a fitness-specific device! Start here... http://www.wareable.com/fitness-trackers/best-heart-rate-monitor-and-watches
Sounds like you need a chest strap.
Has anyone found where I can change the intervall to 10mins? Generally once every hour is fine IMO, but there are certain scenarios where I'd like to monitor my heart rate more closely.
It's 10 mins by default. The problem is you are moving when it try's to take a measurement and fails. To demonstrate this try and take 2 manual readings - one perfectly still and the second time keep moving your fingers.
Sent from my iPhone using Tapatalk
memo357 said:
The Auto HR (Heart Rate) of the Gear S3 isn't satisfying, it only takes (measures) 1 time every hour, the Gear S2 did that every 10 minutes! What a huge step back from Samsung, I just hate it! Will send back this item to Amazon, what a shame
Click to expand...
Click to collapse
K bye. Don't let the door hit you in the ass on the way out.
I know exactly how you feel. That's why when I work out I switch out my gear s3 with my gear fit2 or fitbit2 blaze. The blaze can accurately measure while in motion, the Gear fit2 lacks accurately getting a bpm while in motion.
The blaze fitbit also severely lacks instant notifications. Pretty ineffective if that's what you want it for. Stick with the fit2 or gear s3 as their on target when it comes to notifications being accurately relayed to the wearable
It seems pretty accurate when I'm at rest but I'm not sure about its readings while I'm walking or hiking. Maybe I should tighten up the band when my arms are swinging.
The latest S3 and Samsung Health updates has fixed the accuracy.
I used Polar M400 with chest sensor before S3 and when I started with S3 it seemed to be underrating, for the same 45 minutes cross trainer session, Polar counted about 400 calories and S3/Health - about 300. S3 also shown about 5 bpm less constantly.
With the latest update things seem to be fixed, S3 indications are quite close to Polar.
I'm doing the same session 2-3 times per week, so I can compare the data.
MichaelGG said:
I used Polar M400 with chest sensor before S3 and when I started with S3 it seemed to be underrating, for the same 45 minutes cross trainer session, Polar counted about 400 calories and S3/Health - about 300. S3 also shown about 5 bpm less constantly.
With the latest update things seem to be fixed, S3 indications are quite close to Polar.
I'm doing the same session 2-3 times per week, so I can compare the data.
Click to expand...
Click to collapse
I had a garmin vivoactive hr before and the HR seems to be the same while running but the calorie count is really low on s3. 1000 vs 300
Those of you having issues with movement - slide the watch further up your wrist. Every HR monitor ive tried has the same issue. If it is too close to your hand, it will give crap readings. Apple Watch 2 has the same issue and I have to run with it about an inch higher than where I normally wear it.
I had the Gear S3 about a month after it came out and the heart rate accuracy was pathetic. I was coming from Fitbit Charge HR and that one had problems and still was better than the Gear. For example on a treadmill I was running and my Gear could not get above 80 bpm when I know from manually taking my bpm it was around 160 at least. I think it's from the sensor being on a completely flat surface so it's hard to stay accurate during movement.
I now have the Garmin Vivoactive HR and it is worlds better. Stays within 2-3 bpm of what a chest strap would read.
I think just about any wearable has accuracy issues here and there, but in general you can and do get a fairly good representation over time. If you're looking for dead nuts accuracy, no wearable is going to deliver. I've worn my chest monitor with my Fitbit Charge2 and Gear s3, and overall through the course of a workout, my readings are close enough to produce physical results.
I wear my Charge2 on one arm and gear on the other. The Charge is touted as a fitness tracker and my gear s3 SMARTWATCH produces results that are pretty dang close. Close enough anyway.
I find I get better hr readings lower on my wrist. YMMV.
If no one has found out yet. Maybe different in S3, but in my S2, it is located in SHealth app of gear (not phone). The far right card is settings and inside there is a menu called "Auto HR" which is selectable between Frequent, Moderate or Off.

Questions about Heart Rate sensor/monitor

So, I've had my Gear S3 for a good 2 weeks now, and I can say that the HR monitor hasn't been quite accurate, specifically during running. I'm getting readings of max heart rate at 200 bpm, which is just physically impossible. I've tried adjusting the watch, tightening the strap, placing it elsewhere, etc. My skin complexion it not that dark; I have a healthy tan from running, so it shouldn't be that much of a problem. This can be especially frustrating when trying to maintain peak levels of heart rate during exercise.
Another issue I've had is getting the Auto HR to work properly. Over the past few days, the readings would only work if I was completely still or at rest. However, yesterday I downloaded a new WatchMaker face, and I've noticed that the heart rate sensor has been flashing non-stop. Maybe I didn't notice this prior to installing the new watch face? Ironically though, the Auto HR can now take accurate measurements when in movement every 10 min as it's supposed to. I'm totally confused as to what's going on now. So:
1. Should the HR monitor during running or exercise be this off?
2. Should it matter that I'm in movement during Auto HR measurements throughout the day?
3. Is the HR sensor supposed to be flashing all day?
Thanks.
Could honestly be your heart rate depending on your level of intensity. I personally have had a heart rate of over 200 bpm when doing pretty vigorous activity.
Some watch faces have the heart icon flash constantly. I have downloaded a few that fo that. It's probably just a feature of that paticular watch face.

Question blood pressure

Hi can anyone share some information about the precision of blood pressure measurement ? Thanks
During calibration make it as accurate as possible. That's what I did, and now every time that I verify my results it's close to 1 or 2 digits off at most
excellent news, thanks, I'm hypertensive and I'm thinking to buy my first smartwatch, I'm seriously thinking now at watch 4
Use a quality stand alone bp device to verify the watch's accuracy.
Don't go too nuts with the ability to continuously monitor bp. Lol, Ive always had white coat fever, it's a standing joke now when anyone tries to take it. I'll control my breathing to humor them
What's cool is you can chart your sleeping rate. Sleeping spikes can indicate conditions like sleep apnea.
Your resting rate while lying down, head flat says a lot about your overall circulatory condition. Your bp should ramp down a lot (roughly a 30-40 point difference) within seconds of lying down. If you ever have a bleeder that's why lying down works so well to slow/stop it. Works great for severe nose bleeds.
I'm a medic and was surprised how accurate it was. I calibrated it first with my work BP machine and tested it a few days later and the difference between the two was only 2-3mmHg which is really good.
Anyone knows how to force a recalibration of the bp app? I think a did a wrong calibration but I'm not able to find the option.
Open up Samsung Health Monitor app on mobile
Under Blood Pressure select "view history" at the bottom
Click 3 dots top right
Recalibrate
I don't use BP check's much, but this watch is more accurate than my prior one's! cheers
Hi all, can the Galaxy Watch 4 measure ECG and blood pressure in USA? If not, any other watch that can? Thank you!
Using dante63's remove restrictions you can do this in any country

Question Pixel 6a overheats only in first few weeks, or indefinitely?

Many complain that the Pixel 6a gets hot or overheats. I have also seen videos were people claim it's only in the beginning while the phone "learns" your usage habits and how to optimize itself accordingly. But later on it doesn't need to run all of its processes like in the beginning once it figured you out, so to speak. (The exception being when you record a 1080 video at 60 frames, which even later on can get problematic.)
Can Pixel 6a users chime in here and recount their experiences? Does the overheating last past the first few weeks after purchasing it?
Bonus question: are the signal issues some complain of widespread, or not?
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I really want to get this phone, but I hesitate due to these two issues.
I didn't have overheating issues since I bought the phone 3 months ago.
dudaka said:
I didn't have overheating issues since I bought the phone 3 months ago.
Click to expand...
Click to collapse
Even from day one?
xda-eh said:
Even from day one?
Click to expand...
Click to collapse
Yup
I have my 6a 2 weeks and I don't have any issues with overheating or bad signal.
Thanks.
Anyone else?
Overheating in the sense that it shuts down with a warning? No, never. But the phone does get annoyingly hot, especially when charging even if I'm not using it at all. That's the phone plus the weather in my country isn't helping. Phone regularly touches 40° according to battery guru, when charging can go up to 43°.
On WiFi things are very normal. Mobile data however is a very different animal. It you have poor signal especially expect this to get pretty hot. Like stated above though, not shut down hot just hotter than what I consider normal. 35-40c battery temps on stock with those conditions isn't unusual.
Initial setup for sure gets toasty as well.
For whatever reason (latest updates maybe?), I've noticed recently that not only does my 6a not overheat, but the battery consumption has dropped significantly. At my admittedly low level of active usage I can easily go two days and still be over 50%. I might try for three full days soon.
I dont have any problems with overhiting , i have phone about 30 days. Playing games recording at 4k no heat problems at all.
Damn bruh...another 'overheating' thread?
Yes. The 6a may get fairly warm in some specific use cases, but it doesn't actually overheat as in start throwin' out warning messages and start throttling or worse, crash/reboot that I've ever witnessed. Actually mine seems to run slightly 'less warm' since A13's beta 2 & 3...just before I flashed a custom kernel. A few things to consider besides differing usage scenarios. If you're using a case, it may not only hinder cooling a little but probably 'feels' less warm due to the insulating properties as well. I try to go with a minimalistic case...it may not provide a lotta cushion if dropped but I'm hoping the improved grip offsets that point. And ofc the thinner the skin to less it retains heat. I went with a grippy Spigen Liquid Air or something like that.
Above all, I keep in mind that the 6a has the same processor as the [email protected] P6 PRO and that also helps me to forgive n forget that it can get toasty at times...plus thst resulting Tensor 'grin-factor' tho...
...just my 2 centz ofc
If you're using mobile data or using the phone as a hotspot thing gets very warm.
Normally, I've only experienced the phone getting very warm when I'm playing a game and charging the phone at the same time. However, on a recent trip to a foreign country, my phone (and its camera) stopped working because it was hot outdoors (around 80°F) and I was outside for 30min or longer. My friends' iphones didn't overheat though.
I haven't experienced any signal problems.
Mine never overheats. Its just warm enough to be a hand warmer, but not enough to damage anything
neo_lithic3K said:
Normally, I've only experienced the phone getting very warm when I'm playing a game and charging the phone at the same time. However, on a recent trip to a foreign country, my phone (and its camera) stopped working because it was hot outdoors (around 80°F) and I was outside for 30min or longer. My friends' iphones didn't overheat though.
I haven't experienced any signal problems.
Click to expand...
Click to collapse
...and it displayed an overheat popup warning? 'cuz it was 80F outside? I've been out with my 6a dozens of times in 80F+ weather and NEVER had my phone throw an overheat warning much less shutdown or lock up. You might have something wrong with ur phone if a warm day kills ur phone...js
Zaxx32 said:
...and it displayed an overheat popup warning? 'cuz it was 80F outside? I've been out with my 6a dozens of times in 80F+ weather and NEVER had my phone throw an overheat warning much less shutdown or lock up. You might have something wrong with ur phone if a warm day kills ur phone...js
Click to expand...
Click to collapse
No overheat warning. Phone felt very warm, froze up and apps would barely respond or it would keep on rebooting. Tried a few times to power off, wait a minute, and then power on to get that last photo, but didn't work. After I got out of the heat for a short time, phone went back to normal. Felt hotter like 95 degrees, but weather report said 80s.
Nothing wrong with my phone per se. My guess is that my phone was in direct sunlight for 30 min. I myself was dying from the heat. And before that, I was already taking pictures on and off for an hour (in the heat but not direct sunlight). I've used the phone before in hot weather without issue, but this time around, it was continued use and in direct sunlight.
My 6a definitely overheats and shuts down sometimes without warning. This has happened numerous times even when the phone is having light use (chrome or connected to android auto). I would say there are 2 factors. When the outside temperature is hot (35c or hotter - which currently in Australia is a daily occurance) and when the signal is not strong (also a very common occurrance here) - when this happens the phone can overheat and shutdown within minutes even with little use.
From my exp. signal strength seems to be the biggest issue. The pixel seems to literally burn through the power when signal is weak and get hot.
Generally I have had a 50% chance of getting a 'Your phone is hot' warning - other times it just turns off.
savanne said:
My 6a definitely overheats and shuts down sometimes without warning. This has happened numerous times even when the phone is having light use (chrome or connected to android auto). I would say there are 2 factors. When the outside temperature is hot (35c or hotter - which currently in Australia is a daily occurance) and when the signal is not strong (also a very common occurrance here) - when this happens the phone can overheat and shutdown within minutes even with little use.
From my exp. signal strength seems to be the biggest issue. The pixel seems to literally burn through the power when signal is weak and get hot.
Generally I have had a 50% chance of getting a 'Your phone is hot' warning - other times it just turns off.
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Click to collapse
You should RMA the phone. Sounds like a faulty device to me.
Also, just hot ambient temp does nothing to a phone. If it gets direct sunlight, thats unsafe for the device because of how hot it can get (if you measure temp in your car, it gets up to 60-70C+ easily.) If I use my car in hot sun, I aim an AC vent to its back and then the phone is super chill all through the ride.
h8Aramex said:
You should RMA the phone. Sounds like a faulty device to me.
Also, just hot ambient temp does nothing to a phone. If it gets direct sunlight, thats unsafe for the device because of how hot it can get (if you measure temp in your car, it gets up to 60-70C+ easily.) If I use my car in hot sun, I aim an AC vent to its back and then the phone is super chill all through the ride.
Click to expand...
Click to collapse
Yes, I think I will RMA it. - I don't agree re ambient temp. My phone certainly seems to shut down more often when the ambient is hotter. Also, re the car. I had the phone in the glove box which is separately cooled to 21c and even then it would overheat, - I suspect related to poor signal. But yes - will RMA it.
Try safe mode first. You may have an app which is misbehaving. I've never had my 6a overheat, it will sometimes get a bit warm when charging, but that's it.

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