Apple will release the public version of iOS 9 later today, that means millions of compatible devices will line up to get the update. Unlike last year, when storage issues prevented users from getting iOS 8 as soon as it was released and revealed a huge unexpected problem with Apple’s iOS upgrade procedure, you should be able to perform the update without much free storage.
Which devices are compatible with iOS 9?
If you have a device that runs iOS 8, then you’ll be able to upgrade to iOS 9. That means iPhones as old as the iPhone 4S, iPads starting with iPad 2, and fifth- or sixth-generation iPod touch handhelds.