“iOS 5 supports the same devices as iOS 4.3—the iPhone 3GS and iPhone 4, the iPad and iPad 2, and the 3rd and 4th generation iPod Touch.”
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
“iOS 5 supports the same devices as iOS 4.3—the iPhone 3GS and iPhone 4, the iPad and iPad 2, and the 3rd and 4th generation iPod Touch.”