Synchronization with iOS.
There is no library of watch faces, and among the pre-installed ones, half looks like a mockery. I found for myself 1 cute and a couple more potentially acceptable. I do not use the always on display function, because olways-on dials are different, and the way one picture of a clock with hands is replaced by another picture of a clock with hands looks kind of stupid.
No music download => 2GB of memory in the watch is absolutely useless. At the same time, there has long been a habit of listening to music from streaming, and this built-in memory itself is some kind of hello from the time of hares. no. At first I thought to ask one of my friends for an Android phone to upload music there, then I presented the amount of zapara and scored. Maybe for those who run, and the phone gets in the way, this is a more fundamental point.
The app keeps crashing. If you do not close it completely, but simply collapse it, the next time there will be a black screen, and you have to close and open it again. The only app in my experience that does this.
Tracking of mestrual cycles is not supported, although honor promised to include it in an ate a year and a half ago, along with Spo2 (the second one works). I don’t know if this is also due to iOS, or just like that.
Sleep ysis looks random, the sequence of sleep phases does not look like any logical cycles at all. There is a "smart" alarm clock, but in fact it just always works for me 30, 20 and 10 minutes before the set time.
The Spo2 measurement also looks like a random number every time from 95 to 100. I don’t know if the watch even reacts to noticeable problems with oxygenation. The same goes for stress levels. Most of the time it shows "normal" stress, sometimes "relaxed" (usually in the morning, still in a dream), sometimes it shows "average" sporadically, but by what principle it is never clear. In short, from reliable measurements, only steps and, it seems, the pulse.