Facebook has now become a trendsetter for people networking in the their smartphone or other gadget, so that almost all Facebook applications, including Blackberry. The Facebook 3.0, which provide useful functions like a new news feed, the ability to RSVP events, notes, and the ability to create new photo albums and upload photos. The Facebook 3.0 will also be able to text people or the right of the Friends page, and incoming calls are no longer delete a message. The Facebook 3.0 push notification is not in this update and see push activated 3.1. and the iPhone users would be fine downloading an update, the push Facebook.So you wait for the right Facebook 3.0 are about  at application in  the iPhone 3GS.