I read some posts that people were having issues installing the latest iOS9. So, as soon as I got home I installed iOS9 on 2 iphones (6 Plus and a 5S) without a glitch. Furthermore, I am upgrading my iPad Air 2 to iOS9 as I write this. Blazing fast and flawless as expected. So ignore the unwarranted negativity and upgrade to the latest version of iOS 9 and enjoy all its amazing features.