how much free space does the new ios needs on the iphone to install?
(Thomson Reuters) A man inspects the Apple iPhone 6 Plus at an electronics store in Mumbai. If you're planning on downloading iOS 9 on your iPhone or iPad later today, here's some good news â you won't need to clear out that much space on your device. The update will only require 1.2GB of free space. That's a drastic change from last year's update. When iOS 8 was released last September, it required 4.6GB of free space to install. If you have a 16GB iPhone, that's nearly one third of your total storage space. This resulted in a lot of complaints from users that had a hard time installing the update last year.