Well if you read my posts you'll see that's not what happened - on two different phones. Both phones have significantly less free space after the update, but my 5s has a lot less.The 1.3 gb is how much it needs to update. That's not the end result. I hardly lost any storage space at all after updating iOS 9. It needs space to update, but after it's updated that space is available again. IOS 9 does not take 1 or more gb permanently.