The sound of Apple iPhone 4s is not bad but volume is too slow as compare to other smartphones.
It has a dual core processor which works fine with normal use, user is friendly but sometimes it hangs whenever someone run many applications, I have used iphone 4s for about a year.
The style and design is good, it has a thick steel around the phone, the buttons are made of steel too which looks good.
Due to an old version of iPhone company, the latest applications are not installed but the necessary applications exists.
Apple iphone 4s is available in many colors and look really good in hands but it is a thick phone and has much weight, the screen of iPhone 4s is smaller.
Now days it is available in cheap price in market due to its smaller screen but it still has a value in market people love it because of its brand.