Apple introduced one-hand mode a long time ago for its bigger models which I find helps somewhat. But what I sometimes miss is a mode to permanently resize the displayed screen area to a smaller area. With the iPhone’s current mode, the screen is only lowered so the top buttons can be reached, but the lower half is moved off-screen, and the mode is limited to a few interactions after which the displayed screen is moved up again. What I miss is a mode to permanently resize the displayed screen area to a smaller one so my thumb can reach every point. I hear some Android phones have this. Would be nice to have. Even better if I can adjust the screen area’s size to fit the length of my thumb. And when I want fullscreen again, I switch to fullscreen mode.