What has surprised me most about the iphone 5S is that I have not missed 5-inch phones as much as I thought I would. There is not much to say about the iphone 5s perfomance here other than that its blisteringly fast and very reliable. I have not experienced any issues with apps misbehaving. Its the apple app store that makes IOS a great platform. As a mobile gamer the depth and breadth of titles is fantastic. Gererally the apps are still of higher quality and depth than you can get anywhere else.