The IPhone 3GS is a really cool phone because when you go out in the sunlight the screen is still visible, whereas on other phones it’s not. The phone is quite sturdy and the casing doesn’t really get damaged when you drop it.
Another great feature is the silence button, it is very handy for instance if you are about to go into a building, you can just flick the switch on the side which will put the phone on silent.
The iPhone is quite fast on apps and you only have to force close them a couple of times whilst they are always open. The safari browser is pretty stable but occasionally you have to wait a while before you can get on the webpage again if you lose signal.