I want to say that samsung galaxy s7 is best phone of samsung.And in these phone I like waterproof feature and dustproof and resistant over 1.5 and upto 30 min.And battery life is verygood 3000mah and non-removeble Li-lon 3000mah battery. Samsung s7 black colour is so beautiful. Android os is 6.0.2 latest android os. And chipset sanpdragon 820 Exynos 8890 Octa. Its best feature in s7 which not in s6 memory card slot and dual sim card. Size of s7 screen size 5.1 inch and good resolution 1440×2560 pixels and multitouch.and also always display on