I definitely prefer physical books, but if you carry a phone it is handy to have a bible handy at all times. The small Bibles are nice to have, but as I have gotten older, my eyes have gotten worse. Carrying a small Bible that has writing so small I can't read it doesn't do me any good.
yeah, my vision has declined but i still can read about 8 point font ok so that makes a much smaller volume possible... the one i just got is "comfortable" size, about 10 point, so when i say small i mean like 4.5" tall or so, normal aspect, it would fit in the lap pockets of my combat pants