Unfortunately this capability has been removed from iOS4: http://forums.macrumors.com/showthread.php?t=942533 http://forums.macrumors.com/showthread.php?t=94253

Unfortunately this capability has been removed from iOS4: http://forums.macrumors.com/showthread.php?t=942533 http://forums.macrumors.com/showthread.php?t=942533. Just confirmed it on my iPhone 4.