Wanted to give some feedback after 48 hours of use.
First of all really really impressed with this phone , at this stage I see this as being the perfect phone for me.
Recently I've had in this order SnapDragon N20 ultra, pixel 5 (great camera but average device) , SD N20 ultra again which I still have.
Comparing the s21 ultra and my Note 20 ultra, first things are:
A) Fingerprint reader is so much better, the N20 ultra feels inaccurate and slow after this. This is a big difference in my book.
B) camera - the Note 20 ultra could take some amazing photos but also has some issues with soft edges, colours etc, the S21 fixes all of these from what I have tested. The Macro mode is brilliant also.
C) Battery - note 20 ultra snapdragon still appears better but I will reserve judgement until usage patterns are learnt. I started from fresh again yesterday as I did use smart switch before from the N20 ultra.
Not bothering running in QHD+ with 120hz, will hammer the battery. Runs fast and no overheating unlike my S20+ Exynos which started me on the SnapDragon journey
The reason I started looking at the s21 is due to lack of software updates on the HK note 20 ultra, Samsung appear to have forgotten. No one UI 3 and still on November patch.
Both amazing devices with the s21 fixing a lot of the issues. It's also slightly more comfortable with the rounded edges but a bit more heavier and thicker.
Aiming to keep this combination for a couple of years after switching to much recently.
This is the pinnacle of mobile phones in this form, once foldables are matured that will probably be the next jump.