This is a “you” problem, not an “iPhone” problem.

About 10 seconds.

My S8 goes into the shower with me at least once every single day without ill-effects.

As a result, it’s clean as a whistle, and doesn’t have all my workout sweat building up in the nooks and crannies of the strap, along with all the delicious skin flakes that inevitable drop off us humans.

Whilst this thing isn’t a G-Shock you can cheerfully put through the dishwasher, the only outcome of a ten-minute shower is a clean me and a clean watch.

tl;dr: OP prefers a different keyboard, generalises this out to everyone as if that’s a valid thing to do.

Reddit has a chronic case of “my device has a fault, therefore the software running on my device is fundamentally flawed”-itis.

If iOS (or any other piece of widely-deployed software) was “a buggy mess” then it’d be headline news not only in the tech press, but in the regular, normal-people press too. macOS, iOS, Windows, Android, Linux - all these things work for literally millions (and in some cases billions) of people, all day, every day.

Your iPhone being a bit fucked up doesn’t mean iOS is broken, any more than my iPhone working absolutely perfectly means iOS is without faults.