Well, I have been using this phone since last two years and I don’t remember when did my phone got crash/hang!
it is beautifully designed by APPLE its interface is the best thing comes with best camera and operating system, its style and design is far better than any other phones. it has some cool interesting features such as fingerprint lock, SIRI etc.
and yes, obviously it is apple so price is comparatively high, but is value for money I would rate 10/10.