iOS 6 dropped yesterday, I bet you did not take advantage of it’s “200” new features yet.
If you did take the time to update your iPhone, you may find you have difficulty with your Wi-Fi connectivity. Here is a reported fix. Thanks to AgentOrange.
A. Go To:
Settings>Wi-Fi>(“Your Network”)> [the blue circle arrow icon]
Scroll to bottom of screen and set HTTP Proxy to Auto
.. hope that helps