Iphone 4s. is not a worthy phone.as u all know that they give a better, but iPhone 4s is poor in performances while compared to other phones, it is not friendly after few months lot of bugs will appear.so I suggest not to but iphone 4s.lot of applications will not support to that phone.phone is too heavy too carry.
Even there is no software update for that iPhone 4s.as per my aspect iphone4s is not the worthy phone.