Keep applications open in the background. Organize your apps with folders. Shop for books in the iBookstore. The 8GB iPhone 3GS takes advantage of all the great features of iOS 4.

On iPhone 3GS, making a call is as simple as tapping a name or number. And Visual Voicemail lets you play messages in any order — just like email. You can drag and drop to organize apps into folders on your Home screens and get fast access to your favorites. You can run your favorite third-party apps — and switch between them instantly — without slowing down the performance of the foreground app or draining the battery unnecessarily. So you can listen to a ball game while emailing. Or receive a VoIP call while playing a game.