iphone 4

I phone 4 has been the fastest selling product of apple.
but SOME people have to deal with the network n wifi problem
new features in iphone 4
multi tasking
retina display 4 times better than old i phone's
facetime means the video calling
hd recording and editing
5 mega pixel camera and led flash
folders for apps
u can now customize your home screen background

and the same price as 3gs

and many more