I am Using Samsung Gelaxy S7 this is very good workig, Sound Is very clear outgoing And incoming Calls I like Samsung Gelaxy S7 this is very Good Luck and good performence good Design this mobile touch is very smooth better then other android mobiles I like it this is water proof I have already used 5 times in whater good working centers is very very nice superb Clarity little problem is heating. No issue. This mobile have 4 hm ram na because heating issue. Some times hang this mobile. I am using business perpose I am satisfyied using this mobile finger print is good working totally superb. I am fully satisfied