I recently got an iPhone 4. At home, it connected to our wifi and worked perfectly. Now I am at school. My iPhone is now connected to the wifi here, it says that it is connected and has strong wifi signal. However apps that require internet like email, Facebook app, and online games (like words with friends, etc) load and stall showing "updating". All apps are unable to actually update. It shows it is loading for forever.
What can I do to fix this?