Ive had my s5 for almost a year haven’t had one issue with it. I absolutely adore my phone, the only thing about the s5 is the camera kinda sucks when using snap chat or facebook. Other than that I would totally recommend this phone.
But dont buy it if you cant actually take care of a cell phone. s5 is way better then s4 as the s4’s had a habit of exploding batterys and randomly catching fire, s6 sucks for 2 reasons, no sd card and can not remove battery, also I have had no problems with amould screens going a tinted colour, maybe the user leaves it in hot direct sunlight constantly, the sun will muller anything given enough time