Looks great, performance great.
K4 note made for music lovers it’s Dolby Atmos sound quality is awesome no one can beat it in this price range.Battery backup and performance are also very good no complain in it. There is no heating problem in it as I was read in some review on Amazon. Very simple and sleek design.The screen is good under sunlight and indoors. The only thing I was probably disappointed with is the camera. The picture quality is ok, but they lack in detail. Front cam is decent. Battery is just up to mark: for normal usage 26Hrs, for Robust usage 12 to 14 Hrs. Matte type finish on the back makes a good grip on the phone.BUT no backlight for capacitive buttons, no good protection around the camera lens, non-removable battery.
Finally its a great phone that you must buy.