Personally, I can barely stand the smartphone UI for a camera. The only good thing you have there is touch auto-focus, but I have that on the "proper" NX cameras as well, plus all the dials and knobs for quickly adapting to the subject.

The NX mini is a great little device, but it was badly marketed and priced, and its manual focus is utterly unusable. I so much wish that the mini2 would've been released before exiting the market!