Phone keyboards will do that to a big bear. Even the biggest phones on the market feel small in my paws.
use a pointer on the phone or tablets. I have one that is both a pointer and pen. Very handy. My fingers are fat and my hand is wide. Have to use a full size mouse on the desk top, also a full size keyboard. fat hands and fingers with arthritis is a poor combination for computer use. I can type, not hunt and punch.
On a tiny screen an en and an em look the same to me. If there isn't a red line under the word it's usually good to go by my eyes.