This is my moms iPhone 4. Attached are 2 screenshots. For some reason without WIFI, it won't send any emails. Or download any apps at all. Full bars and Full 3G. Everything works fine with WIFI. But there is no WIFI at her work. The email she uses is surewest.net http://forums.macrumors.com/attachment.php?attachmentid=312308&stc=1&d=1321411377 http://forums.macrumors.com/attachment.php?attachmentid=312309&stc=1&d=1321411377 The email is just an example. It won't send ANY emails to any email address. Also, it won't download any apps no matter what size they are.