I bought a Galaxy S21 5G grey in Brazil, here the version uses Exynos 2100. I came from an iPhone XR and I regret so much that I trade my iPhone for this phone
Battery: Only 4,5-5h SOT with a 4000mAh cell. My XR used to last 6-7h SOT with the same use profile with a much smaller battery of 2900mAh. My city desn´t have 5G yet.
Screen: Despite the screen operates at 120hz, the phone lags in certain apps, documents and all the times I open the camera. My iPhone XR, an 2018 phone didn´t lag at all.
Camera: I don´t know what samsung does with the camera. I had to take 10 pictures until I found one that I liked. My iPhone XR I had to take only one picture and boom. Samsung uses an oversharp algorhitm that destroys the photo, loses detail and increase noise. I just hated almost every picture I took.
I sold my S21 and Bought an iPhone 11. Now I am happy again