What is the difference between a iPhone 4 and 3?
The iphone 4 has reception issues and the iphone 3 dosn't
What is the difference between an iPhone 4S and an iPhone 5 and will they both come out?
So far only the iPhone 4s has come out, so there is no comparison quite yet.
What is the difference between iPhone sdk2.0 and iPhone sdk3.0?
Hey, iPhone SDK 3.0 includes many new features. The major ones are access to the Internet via modem via USB and Bluetooth, MMS, support for a greater number of Exchange policies and many others.
What is the difference between iPhone web apps and iPhone websites?
web apps are almost like online iphone games / apps like in the name. but an iphone website is a site designed for the iphone/ in iphone format
What is the difference between the black iPhone 4 and the white iPhone 4?
it's just color difference