This iPhone is named "3GS". The "S" in "iPhone 3G"S"" means "Speed". The iPhone 3GS has better performance, allowing it to run faster and more efficiently. It also has a higher quality camera that can take photos with higher resolution, as well as take videos with better quality. It also adds the ability to use voice control, a function where users can talk into the phone to command actions on the phone. The iPhone 3GS can also support faster downloading. 