For Android users (no idea about i0s) if you select a word and then press shift it cycles through:

hello
Hello
HELLO

Thought you might like to know that.

I do use the Google keyboard so YMMV
@kevpluck Dang, that's wicked! Thanks for the tip. Today I learned something new
@kevpluck Oh I *wish* iOS did that. Just tried it, no joy.
@kevpluck Is it strange that as I read those variants, I heard a barbershop quartet in my head. (Only three of them got to sing.)

@Phyz

heLLO

@kevpluck If the sarcastic singer shows up:
HeLLo (HeLIO looks too solar).
@kevpluck
Does this work for everyone or just Three Stooges fans?