Some apps doesn't work on certain wifi
I have an iPhone 4 and when I play some game apps that require server connection, it will often fail to connect to server on certain wifi.
At home, I have no problem with usage of these apps but if I am outside and I connect to school wifi, the apps wouldn't work.
If I use 3G, it would work normally so I think it has something to do with wifi sercurity.
Is there any way around this problem?
iPhone 4, iOS 4.3.3