How is iphone 5 better than iphone4?

I plan to buy an iphone but I have no clue which one is better to work with. I'm a student and many students in my class use an iphone.

More RAM, better processor, bigger screen and higher resolution, the works really.

Here is a comparisn from iphone website. This tell you a lot
http://www.apple.com/...e-iphones/

Also some other links
http://www.latinospost.com/articles/4473/20120922/iphone-5-vs-4s-features-differences-apple-smartphone-specs-lte-camera-screen-retina.htm

Siri, screen is 0.5" bigger, ram and processor.

Too long for copy and taste.

http://www.gizmag.com/iphone-5-vs-iphone-4s-vs-iphone-4/24351/

" I'm a student and many students in my class use an iphone"

Then why not ask them? The older iPhone doesn't use Siri or 4G, and it will probably have slower performance than the 5 or 4s, but it's cheaper and - unlike the iPhone 5 - the connector will fit the same docks and other accessories that have been sold for iPods for years. Also, if there's no 4G service in your area - or no reliable service, it's one less argument for the new iPhone.

Everything new is known to be better but the new comer always make you think of the goner.

Do not forget about the 4s

More than 5 ways eg, screen, ram, better siri, etc.
Hope I Helped

Get the 4s or a droid