Custom APN + iOS 4
iPhone Configuration Utility) that include my company's APN and a Proxy server.
Everything OK until I upgraded to iOS 4: now the authentication on APN fails ("PDP Authentication failed" is the message). If I try to see which APN configuration settings are active on my iPhone (i pick "Celluar Data Network") the page crashes and i get returned to Springboard!
iPhone 3GS 16Gb, Mac OS X (10.6.4)