i want to write what's good about z3c, also compare to other phones.
-. sound effect: nice surround sound - bump the bass, dsee hx - convert the sound for the better, equaliser - how sounds are adjusted to preference.
-. battery that last, never have to run saver mode for a day
-. responsive and good feedback on buttons, frame is right on hand and comfortable including plastic on the side, screen is enough large for one hand use
-. nice phone color (at least white, while others with black on front is not elegant)
-. UI color reproduction, icons presentation on app drawer, fact that quick setting is not on horizontal scroll like samsung, setting UI with icon color on the side (example some other phones setting UI is using poor font color and looks plain), camera settings access is nicely located, good features in camera e.g. i can't find how to change the image size on iphone - can't understand, just by not having this feature is enough to classify iphone camera app as not desireable.
-. smooth operation, apps are useful (ecept lifelog which i think only good at draining battery), music app has a list for shuffle queue while other phones just produce normal queue and shuffle the songs within it.
the bad
-. occasionally, swiping apps drag the screen back
and many others which i haven't think about
