Will an iPhone 5 case fit an iPhone 5s?

Will an iPhone 5 case fit an iPhone 5s?

Yes they are the same thing only difference is iphone 5s has touch screen home button that's all and new software but same size and same everything you can't notice the difference at all

Yes. They are the same phone… Hence the S for 5S… Means "Same"

IPhone 5S has dual flash (or whatever you call it). Look if your case's hole for the flash is big enough.

Yes, they have the same appearance. They only differ in features and functions.