Hey Guys, My iPhone 3GS keeps getting this message when I try to go to a website on Safari,despite having full bars and a 3G connection. "Can't Activate Cellular Data Network' And sometimes the page might load,but when I try to go to a different page,it would just keep loading and nothing happens. My iPhone is not jailbroken btw. Also,it would take extremely long for an article to load on wikipanion,and other apps,not only Safari. Even on mail,it can't connect to the server. This just started happening today. How can I fix this? Thanks.