iPhone OS 4's new multitasking offers users a new way to quickly move between apps. iPhone OS 4 delivers the best mail experience on a mobile phone with its new Unified Inbox, allowing users to see messages from all their email accounts displayed together in a single inbox. that iBooks ebook reader app and accompanying store from the iPad has ambled on down to the iPhone. Apple's going to roll out a centralized gaming service—a multiplayer network like PSN or Xbox Live. Bluetooth keyboard support will finally come to iPhone 4.
not good enough, it's limited to audio, VoIP and GPS
iPhone OS 4's new multitasking offers users a new way to quickly move between apps, and provides developers seven new multitasking services to easily add multitasking features to their apps. These services include background audio, so apps like Pandora can play music in the background, and VoIP, so VoIP apps can receive a VoIP call even when the iPhone is asleep or the user is running other apps. iPhone OS 4 provides multitasking to third party apps while preserving battery life and foreground app performance, which has until now proved elusive on mobile devices.
Like the iPhone and the iPod Touch, the iPad has the ability to run one application at a time (with a few exceptions such as the iPod music app and Yahoo IM). Rumors say that Google is planning to change this when introducing its tablet, by giving it multitasking abilities.
