I am using iphone 5s.this phone is best for me because I think it never hang and loose any kind data where I can stored in icloud so this phone is best for me.i love the application.it have lots of function and lots of features.i love siri he can explain everything where I have a problem.he open all the application and do anythin.i love camera features and sound quality.thatswhy I am saying this phone is best for me.