To do what? I usually hold it with my left and, and one-finger (right-hand index finger) to type / scroll / select / etc. I guess I never "got" the phone model properly or something. My daughters type way faster on their phones, I can't do thumb typing (how do you hit those letters?!?), plus my thumbs get too sore too fast (decades on the edge of carpal tunnel) and/or cramp up.

I was timed at 140+ wpm in high school and online tests / etc have hit close to 200 wpm on a Qwerty. So I CAN touch-type and do it well - and keyboard + mouse is my goto jam. My favorite phone (alas, discontinued way too soon) was the Photon Q (work gave us phones way back) with slide-out physical keyboard.

I "use" an S21, but even just entering my 4-digit pin is awkward with my left thumb - is there some other way to hold it? I can't even imagine trying it with my right.. My thumbs just cramp up..