The Samsung Gear S3 is a smartwatch that automatically tracks your sleep. It does this by tracking your heart rate and movement through the night. If you want a fairly accurate reading, you need to wear it all night. If you don't wear it to bed, the app will ask you the next day if you were sleeping from the time you took it off to the time you put it back on. Some users have reported issues with the sleep-tracking feature, such as it not working when the phone is not in bed with them or not tracking their sleep accurately. However, others have found it to be accurate and useful for understanding their sleep patterns.
| Characteristics | Values |
|---|---|
| Tracking Accuracy | Tracks sleep for 2 hours when not worn; tracks about an hour and a half of 8-hour sleep |
| Comparison with Other Devices | Fitbit tracks sleep almost to the minute; Gear S2 is more difficult to use |
| User Experience | Users have reported issues with the device's battery life |
| Automatic Tracking | Tracks sleep automatically; no way to set to sleep mode |
| Heart Rate and Movement | Tracks heart rate and movement through the night |
| User Settings | Users can set bedtime and wake-up time |
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What You'll Learn

Gear S3 tracks sleep automatically
The Gear S3 is a smart watch with automatic sleep-tracking capabilities. Users can simply go to bed wearing the watch, and it will automatically recognise when they are asleep and start tracking their sleep. After waking up, the watch will provide a summary notification within a few minutes, detailing when the user fell asleep and woke up, a rating of their sleep as a percentage, and a sleep graph showing deep and light sleep periods. This data can be synced to the Samsung Health app on the user's phone for more detailed information.
Some users have reported inconsistencies with the Gear S3's sleep-tracking feature, with the watch only capturing a portion of their sleep or continuing to track sleep after they have removed it from their wrist. These issues may be due to various factors such as the watch band, battery life, or other technical glitches. However, Samsung has been known to provide support and suggestions to resolve such issues.
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Accuracy issues with sleep tracking
Several users have reported accuracy issues with the sleep-tracking feature of the Gear S3. Some users have reported that the Gear S3 only captures a portion of their sleep, while others have found that the watch continues to track their sleep even after they have taken it off and placed it on a table. In addition, some users have noticed that the Gear S3 does not track their sleep as accurately as other devices, such as the Fitbit.
It is important to note that the accuracy of sleep tracking on the Gear S3 may depend on various factors, such as the tightness of the band, the position of the watch on the wrist, and the user's movements during sleep. Some users have suggested that wearing the band tighter may improve the accuracy of sleep tracking. However, it is important to strike a balance, as wearing the band too tightly may cause discomfort or even bruising.
Another factor that may affect the accuracy of sleep tracking is the synchronization between the Gear S3 and the Samsung Health app. It has been reported that the Samsung Health app crashes on some pre-2024 Galaxy devices when syncing data from the Gear S3. This issue has been acknowledged by Samsung, and they have released updates to improve the synchronization process and prevent the app from crashing.
To improve the accuracy of sleep tracking on the Gear S3, users can try the following:
- Ensure that the band fits snugly on the wrist without being too tight or too loose.
- Wear the watch throughout the entire night to allow for continuous tracking.
- Update the Samsung Health app to the latest version to avoid synchronization issues and crashes.
- Reset the device, reinstall the Gear Manager, and pair it again, as suggested by Samsung support.
- Try using a different band, as some users have found that the stock black band provides more accurate sleep tracking than the red band that comes with the Frontier model.
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Comparison to Fitbit sleep tracking
While the Gear S3 does offer sleep tracking, it is not as comprehensive as the sleep tracking offered by Fitbit. The Fitbit Inspire 2, for example, automatically tracks bedtimes and wake times, disturbances, sleep stages, and heart rate. It also provides an overall sleep score and different breakdowns of your data. The Fitbit Inspire 2 can measure all the most important data you need to examine your nights, and while it is not as comprehensive or easy to digest as the Whoop, it does come with a lower price tag.
The Fitbit Inspire 2 is a great sleep tracker that provides nearly as much data as the Whoop Strap 4.0. The Inspire 2 has a best-in-class 10-day battery life and has a lower monthly price for its sleep-tracking features. The Whoop Strap 4.0, on the other hand, offers a large amount of easily digestible data, multiple wearing options, a long battery life, and an easy-to-use app.
The Fitbit Charge 6 is another great option for sleep tracking. It provides accurate data, a useful sleep score, and access to Fitbit's Sleep Profile program, which involves monitoring your sleep for an entire month and then analyzing the long-term data to determine your sleep phenotype. The Charge 6 also has a full-color display, 40 exercise modes, and the most advanced heart-rate tracker Fitbit offers.
In terms of comfort, the Gear S3 may not be as comfortable as the Fitbit Inspire 2, which has a thin design that makes it more comfortable to wear at night. Additionally, the silicone band on the Gear S3 may be less comfortable than the knit strap on the Whoop Strap 4.0.
Overall, while the Gear S3 does offer sleep tracking, it may not be as comprehensive, accurate, or comfortable as the sleep tracking offered by Fitbit devices such as the Inspire 2, Whoop Strap 4.0, or Charge 6.
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Sleep tracking with Samsung S-Health app
The Samsung Health app has a sleep monitoring feature that can be used with a Galaxy Watch. This feature allows you to view your sleeping time, record your snoring, and use sleep coaching options. To use this feature, you need to enable it in the Samsung Health app on your watch. Open the app, swipe to Settings, and tap the switch next to Blood oxygen during sleep to turn it on. You can also turn on Snore detection in the same way.
The watch will then detect and calculate your sleep patterns during the night. It does this by tracking your heart rate and movement. If you want a fairly accurate reading, you need to wear the watch all night. If you don't, the app will ask you the next day if you were sleeping from the time you took it off to the time you put it back on.
The sleep coaching feature can be used after wearing the watch for at least 7 days and nights. This feature can only be adjusted from the phone, not the watch. The sleep coaching program will guide you through the best way to get a better night's sleep. Open Samsung Health on your connected phone and tap the Sleep tile, then Get started with sleep coaching. You'll need to answer some questions about your sleep to help determine how best to coach you.
There have been some issues with sleep tracking on the Samsung Health app. Some users have reported that it does not accurately measure how much they are sleeping, with one user reporting that it only tracked an hour and a half of sleep out of 8 hours. However, a recent update to the app appears to have fixed some of these issues, with users reporting that it now tracks more deep sleep than before.
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Troubleshooting sleep tracking issues
Firstly, the Gear S3 is designed to track your sleep automatically. You do not need to manually activate sleep tracking. Simply wear the device to bed, and it will automatically detect when you fall asleep. It does this by tracking your heart rate and movement throughout the night. If you want an accurate reading, make sure to wear the device all night. If you don't, the app will ask you the next day if you were sleeping from the time you took it off until you put it back on.
If you are having issues with sleep tracking, there are a few things you can try. One user reported that their sleep tracking issues were resolved when they switched from the Samsung red band to the stock black band. They also rebooted the watch, which improved their battery life and sleep tracking. Another user reported that their issues were resolved when they switched from the Samsung red band to the Gear Fit2 band. If you are still having issues, you can try resetting the device, reinstalling Gear Manager, and pairing it again.
If you are having issues viewing your sleep data, try the following. Open S-health on the watch. When it opens to the calories screen, tap the screen to go to the time-based detail page, then rotate the bezel back to the blue area(s). It will tell you the duration and efficiency of your sleep. You can also access this data through the Samsung Health app on your phone. When you're on the app home screen, you should see several "tiles" with information. Sleep is one of the tiles at the bottom of the screen. Click on the "+" sign and choose sleep. The information is recorded on the Gear and logged in Samsung Health, where you can retrieve past days' data.
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Frequently asked questions
The Gear S3 tracks sleep automatically by monitoring heart rate and movement through the night.
Yes, you can set a bedtime and wake-up time on the Gear S3 through the S Health app.
There could be several reasons for this, including issues with the device's firmware, battery life, or watch band. Try updating the firmware, rebooting the device, or adjusting the band for a tighter fit.
To stop your Gear S3 from tracking sleep, you can try disabling sleep tracking in the device's settings or removing the device from your wrist before going to sleep.











































