At first, I thought it was okay to use my smartphone when I would poop but then I realized how nasty it would be since I make phone calls and I would rather not have fecal particles near my face. Well, except for when I eat ass.
I pull it out before I start pooping and put it back into the pocket before I wipe. Since I wash my hands for around 30 - 50s after pooping, they're as clean as they can be, so I couldn't care less, tbh.
I know, however, that some disgusting plebeians don't wash their hands after they're done with their business. And I know that Satan has a special place in hell for them.
We used to have, and still do, these books called "Huussikirja" (loo book). A collection of jokes, quizzez, stories, whathaveyou, on a string, usually attached to the toiletpaper dispenser.