what services and features do iphone provide

At the present time, iChat or AOL IM is not supported on the iPhone. This could change by the time it is released. Video iChat will definitely not be supported in this release.The Apple iPhone supports WiFi frequencies of 802.11b/g. The iphone can also open pdf files. The resolution of the iPhone screen 320 by 480 at 160 ppi and it measures 3.5 inches.