Update iPad iPhone iPod to iOS 9.3.5 ~ Mr-moas Blog

iOS 9.3.5 was released on August 25, 2016; the update fixed three critical security vulnerabilities where, if a user clicked on a malicious link.
Installation
iOS 9 is a smaller update than iOS 8, requiring 1.3 GB of space, compared to 4.58 GB for iOS 8.[37] Additionally, iOS 9 includes an option to temporarily delete apps to allow the update to install. Once the update has been installed, the apps will be automatically restored.[37][38] iOS 9 also features "app thinning" functionality, whereby only the necessary assets needed to run apps on each individual device is downloaded rather than the entire app, potentially saving space.

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