I have an NX Mini (which isn't exactly the same as the regular NX line) which has a "1 inch" sensor and a 3-lens interchangeable system. With the 9mm fixed lens it's as pocketable as a phone, but with a flip-out screen, a real flash and otherwise much better quality. With the 9-27mm zoom lens it's even a reasonable portrait camera. I haven't found one of the 17mm f/1.8 lenses, they're pretty rare.

Anyway, I really like that little thing. With a C-mount lens adapter I can use surveillance camera lenses which is pretty fun.