The length of the device has increased compared to S9 and s10. Buyers appreciated the S-series just because of the small, convenient dimensions. To whom the dimensions were not important, they bought the "plus" version. Samsung, please practice pulling screens on other models.
The fingerprint scanner has been removed from the back. On the S9, it worked so well and the finger lay on it so naturally that there was no process of unlocking the device. The S20 sub-screen scanner works every other time. To make it work the first time, you need a whole ritual - aim, calculate the pressing force and the correct angle of application of the finger. Rave! And this despite the fact that there is no protective film on the screen. Here, I'm sure, Samsung simply decided to save money, because the under-screen scanner works fine on the P40 (but it's still far from the S9 scanner). To Samsung's credit, after one of the ates, the scanner's work improved a bit - it was ugly, but it became bad.
Removed retinal unlock. It allowed you to unlock the device with a mask on your face without touching the screen. A mega-useful function has become a victim of an overgrown, not in the right place, screen.
The camera block began to bulge out of the device. And this is not a price to pay for a significant improvement in photo quality, like the Nokia 808 and other phones with a large camera matrix and / or flash. Photos are only slightly better than the S9. And for a number of parameters, for example, focusing at close range, the camera (cameras) work worse.
Under pressure from Bixby haters, the extra button was removed from the side of the phone. Of the flagships, only Sony has an additional side button (for taking photos), but, in my opinion, it cannot be remapped without root. Here S8, S9, S10 were unique. On my S9, the button was responsible for "home" and "back". Imagine that you have lost your usual way of managing basic commands. I get used to it with difficulty. There are no complaints about Samsung here - it is unlikely that many people have used this key. But this is my review, I write that affected me personally.