I bought it in August 2021 for 399 euros.
I didn't want to write a review in the first few weeks because I wanted to have a complete picture.
Every month, at least once, the watch crashes and doesn't respond.
As a result, the battery drains and needs to be recharged from scratch and then it functions normally.
Every day it gives me inaccurate measurements for everything.
Initially, when I lie down to sleep and while I'm lying down and not sleeping but talking to friends or reading or listening to music or watching a movie, it shows that I'm asleep.
I wake up and while I'm lying in bed, it continues to show that I'm asleep.
When I sit down and move my hands while not walking, it tells me "Congratulations, you've reached your goal" and it counts the steps of the day.
It measures heart rate and has a deviation of about +- 2 to 4 beats, either more or fewer.
The oxygen measurement has a deviation of about +- 2 to 3% oxygen.
The applications on the phone freeze at least once a week.
The battery, although it claims to have a battery life of about 1 week, actually needs to be charged every day or at least every other day.
Sometimes, especially in the summer, it overheats and gives me the feeling - thought that it might explode in my hand.
The automatic brightness on the screen works randomly.
At night, it randomly increases or decreases the brightness without any change in the ambient brightness.
During the day, it presents the same problem of increasing or decreasing brightness for no reason.
For 2 years, from 2021 to 2023, the Wear OS 4 operating system has not received any updates or upgrades.
All the problems it had from the first day I bought it, it still has them today.
I wanted to buy the Watch5, but it has almost no difference from the Watch4, neither in terms of material nor software.
I was considering buying the Watch6, but it also has no significant difference from the Watch4.
For 3 years, Samsung has been releasing more or less the same models at the same prices, without any substantial differences in material and software.
I'm looking to buy another brand, like the Apple iWatch 8 or 9, but I'll have to change my phone as well for it to work.
On August 17, 2023, it broke down completely...