I started a small company that fixes Iphones.
The iPhone was first released in 2007, how long have you been fixing them?
I have done it for a while for just my friends and relatives, but with the booming market, it is a no brainer. People aren't smart enough to fix these things it seems.
They are quite complex machines, very versatile.  Users can do just about anything with their iPhone nowadays.  Text messaging, navigation, etc.  The phone has been transformed since the iPhone.