If you can not connect to your campus WiFi network because your school are using 802.1x authentication that requires your input both username and password, please voice up to Apple, ask them to put 802.1x compatibility in next udpate. The current iphone version does not support this kind of wireless authentication.

Let's fire up feedback to Apple, pls go to here to put your feedback on this:

http://www.apple.com/feedback/iphone.html