Its quite large. Really too big for my hand to manipulate into different positions and hold securely. However, it certainly does look notably more modern than the iPhone7 I have been using. Still, the 7 is really more light and thin. In some ways, it seems as though we’ve regressed.
I haven’t actually started using the 12 yet as I didn’t have an urgent need to. My old phone is still working fine. I just happened to get a good deal on it that I felt I should take advantage of while I could.