Yes. The fact that all these useful sensors (touch, display, camera, location, attitude, wifi/3g) are integrated in one small, portable, and not-that-expensive

Yes. The fact that all these useful sensors (touch, display, camera, location, attitude, wifi/3g) are integrated in one small, portable, and not-that-expensive device opens interesting new possibilities. Think of the hobbyists who send their phone into space on a balloon.