I have iPhone 11 Pro and I have to take the case off to get it in. Again I LOVE the bag. But I'm never going to call it practical, and a K25 can go most places a mini K can, although I might wear a mini K (sans strap) with an evening gown and I definitely would not do that with a 25. (Yes, I know even a mini K does not quite fit formal evening rules, but in Box especially I like mine with a gown...I am a rebel what can I say!)
I actually love the mini kelly with evening gowns, i wore mine twice. I think it depends on the leather and colour of the bag.
I think a mini K would be so pretty with evening wear, not that I have that many occasions to go to. I have an iphone XS and I'm content to just have one small SLG for a few cards and some cash.