Does any 1 knows all the 100 new software features in ios4 not asking about api,s our hardware improvements just the software improvements according to sj there are 100 new features(improvements) Does any 1 know all of them Here are few i know Background audio (think Pandora). Background VoIP (think Skype). Background location data, both with live GPS for backgrounded turn-by-turn, and cell tower-based for lower power draw. Orientation lock -- you can set it to always stay in portrait Spell check (like on the iPad). Bluetooth keyboard support (again, on the iPad). User-defined wallpaper (a jailbreak favorite). Tap to focus when recording video, just like with photos, and a 5x digital zoom for the camera. Playlist creation and nested playlists App folders for sorting apps. You can even put an app folder in the dock. Enhanced Mail. You can have a merged inbox view, switch between inboxes quickly, and sync to more than one Exchange account. There's also threaded messaging (at last!) and in-app attachment viewing. iBooks, just like on iPad, only smaller. You can wirelessly sync books between platforms, a la Kindle. Enterprise features, including remote device management and wireless app distribution. Local notifications. Like push notifications, but sends a notification straight from the app without needing a push notification server, perfect for an alarm, for instance. Fast app switching. Saves the state of an app and resumes it from where you left off, without dwelling in memory. Can any 1 name all others ??