How the Sleep Tracking Works

It's expected that you may have some questions regarding of how sleep tracking is working and what all the numbers mean. Let's try answering them.


I have slept not that amount of time, that I see in the app

Sleep tracking with Mi Band like any other similar fitness band is done with an accelerometer. It measures how much you move all the time and what kind of movements you do. When a man starts to sleep, he actually moves less or even doesn't move at all. This is the main sign of your sleep start. During your sleep, there are small movements, but when you wake up you start to move a lot. But still here can be some differences between your real sleep time and calculated one.


I remember/don't remember that I woke up in the middle of the night X times, but the app is showing less/more.

Unfortunately, it's still not that precise, as we would like it to be. Band tracks as waking up any high activity before you actually wake up, it can also include moments when you snooze after the alarm. But awakenings tracking even takes into account possibility for you to walk in the night for a short period (going to the bathroom, for example).


I haven't found the answer to my question. What should I do?

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53 comments:

  1. I used to do night shift and sleep in morning then how can I change the settings for my sleep activity and one more thing if my friend wears it for sometime will it encounter the data for my daily activities

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    1. Well on the home page itself when you will click on sleep data u will see some icons and below it will be stats and EDIT so u click on edit change the timings...
      Bingo ur job is done rest mi band will handle

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    2. I did change the manual time set for sleep tracking but it's still not showing my sleep . I'm also working in night shift

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  2. I used to do night shift and sleep in morning then how can I change the settings for my sleep activity and one more thing if my friend wears it for sometime will it encounter the data for my daily activities

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    1. Same with me, its not taking sleep time during day, dammit this band is not designed for night riders.

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  3. It does not track sleep at all for me.

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  5. Same. It doesnt track my sleeping data at all. How?

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  6. I find these orange lines in my sleep data. What are they? Any idea?

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  7. Not tracking sleep at all for me, either. I've seen many comments online indicating that this is a problem for lots of people. It needs to be addressed.

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  8. Yesterday its shows me sleep time but today its changed

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  9. Yesterday its shows me sleep time but today its changed

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  10. Yesterday its shows me sleep time but today its changed

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  11. I work at night? Anyway to make it track my sleep during the day?

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    1. You can change the phone timing from am to pm before sleep. should do the trick. so far thats the only way i managed to get it to track.

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    2. Tried this method is not a correct answer.

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  12. I work at night? Anyway to make it track my sleep during the day?

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  13. It tracks NY sleep time very well but overestimates my steps and distance covered.

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  14. I am working at night too. I got a same problem it cannot track my sleep data.

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  15. I am working at night too. I got a same problem it cannot track my sleep data.

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  16. Somehow i cant get it to work with Mi Band 2 Any Ideas what to do?

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  17. How many hours of deep sleep should I be getting?

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  18. Hi,

    I have activated the option to measure heartrate during sleep, but cannot find the data regarding heartbeats.

    Can you help me?

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  19. Hello, im working in night shift as well! Any ide how can i set my band to track my sleep during the day? Lets make an option in the app, shouldnt be that hard, right?!

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  20. My app shows no sleep data how do i set it up

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  21. I am trying to set my sleep time manually but its not working
    I am aslo doing Work Night and its not work for me. 😞

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  22. I am trying to set my sleep time manually but its not working
    I am aslo doing Work Night and its not work for me. 😞

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  23. Does your app use HR tracking to get more accurate sleep data? If not do you plan to enable it?

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  24. I also napped quite some time last sunday and it didn't track any of that

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  25. I just have bought mi band and have downloaded this app for windows phone. When i click on the sleep track symbol, the app gives msg "update to PRO to enable sleep tracking. To update I have to purchase some subscription.

    will anyone please elaborate this?

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  26. Mine doesn't register I have slept at all.

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    1. Be sure to put it on such that the back of the device touches your skin and the band does not move about, otherwise, it is not able to track anything.

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  27. How does the band differentiate between deep and light sleep?

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  28. it can't track sleep in the morning. I don't know why. I meddle with all settings already. you can key in manually what time you slept but that's irrelevant since its not being tracked.

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  29. it can't track sleep in the morning. I don't know why. I meddle with all settings already. you can key in manually what time you slept but that's irrelevant since its not being tracked.

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  30. I had Mi Band for a 2 years, and now MiBand 2s for about 3 months...and i must say i am disapointed with many things here, but vorst thing is it's sleep tracker.
    ​First version was a lott accurate.
    ​this one is showing a lot of "Easy sleaping", for all...when i take my phone during a night and read something, stend up and go to toalet, it doesn't get that i am awake​ even though i chekt time and measure hart beats on it!?

    MiBand did not have hartread monitor, but it was lot more precise with sleap tracking...also buy using both devices, step tracking is showing diferent results...off course, i did not count it manualy, so i can't sey which is "better", but i give my vote to old one.

    Mi band 2 have hartrate monitor, but it doesn't work on black skined people, it often have problems with oters too...
    ​i must say i am dissapionted a lot with it.

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  31. Why doesn't it monitor afternoon naps?

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  32. Wow. How limited that it only tracks night sleep. I have a sleep illness and I often don't sleep at night because I've passed out and sleepy during the day. I need to track my sleep but if you aren't what xiaomi considers normal.. you wasted your money. Thanks xiaomi, for being short sighted and ripping me off work an item that doesn't work. Not cool xiaomi. I will post a review letting people know not to buy because you discriminate against anyone who works nights, has a sleep disability, or is just a night owl. NOT RECOMMENDED!

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  33. I have mi band 2 - and one problem with sleep tracker. When I go to sleep at 22:00, it tracks my sleep time from about an hour after midnight. It repeats every night even though I fall asleep about 22:00. Any suggestions?

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  35. My app shows no sleep data. Developers do not answer! Hey, many people wanna know what wrong with sleep monitoring!

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  36. No sleepdata too.Whats wrong with it?

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  38. It's possible to see HR taken during sleep monitoring? Or it's just a "secret data" to analyze sleeping period? Thanks!

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  39. Hello! Does PRO version enables smart wake up based on sleep analysis?

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  40. Mi sucks interms of sleep data , i tried almost all product for Mi . sleep data is not accurate and many time doesn't work. for night shift guys its of no use.

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  41. Should I set anything to track my sleep or it will track automatically??

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  42. Maybe NO one know how to track nap time with band 2 BUT tracking is vital... I'm sure MI band developers will get it right BUT WHEN
    PLEASE
    DO IT FASTER

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  43. Does my phone need to be on during the night for the band to track sleep?

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  44. As I've figured out, band calculates how much you sleep. That is way different from sensing when you sleep. So the band uses sensor to know how much you move to get approximate sense if you are asleep and then it calculates how time has passed from it to get into REM phase based on approximate data how much time a normal human needs to enter into REM phase of the sleep
    That is way different from real measurement of how much you are really in the REM phase because some people can have weak sleep but don't move much...

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