Added new icons for call forwarding, network and VPN.

Added a 2nd icon set.

Just added a few new icons. The next update with a second colorset is scheduled for the end of the week. so make sure to check back again later!

No, internet connection is not required. You can easily give it a try by pressing a shortcut during activated airplane mode.

Apple included internal calls to preferences in iOS5. I think they need them to enhance Siri with iOS 5.1. You can try it by yourself by typing "prefs:root=Phone" without " into Safari.

No, since iOS5 this setting is missing.