What's New in iOS 5
iOS 5 might be the most popular version of Apple's mobile OS yet. When Apple released it as a digital download through iTunes on Oct. 12 the heavy demand almost crashed Apple's servers.
Available for the iPhone 3GS, iPhone 4, iPhone 4S, and all iPads, this update includes more than 200 enhancements for a reasonable price--it's free. This visual tour focuses on 11 major enhancements and four new apps introduced with iOS 5.
The iMessage app is Apple's answer to messaging services that Blackberry users have enjoyed for years. Although not a complete replacement for SMS text messaging, it's pretty close. You can use it to send and receive messages across all your iOS devices, even the iPad.