iPhone 6S : Speed & Battery Comparison - iOS 9.2.1 vs iOS 9.3.1 HD

First iPhone 6S video ! Finally got hold of 2 - iPhone 6S devices, and not wasting time anytime to do a comparison. iOS 9.2.1 vs iOS 9.3.1 and as these are brand new devices a side by side battery test. Normally I would do the battery test on the same device to ensure same battery wear, but as these are brand new devices I would think it fair to compare side by side. Follow us on Twitter @iAppleBytes for updates on new videos in the making, and other stuff and PLEASE PLEASE subscribe to the channel means the world ! Music Good Boys Do It Well and Loona by Alexey Pavlov https://soundcloud.com/legeranin All devices has been fully restored, and loaded with the same backup. The 4S devices are 32GB versions, the 5 and 5S devices are 16GB versions and the iPhone 6 and 6S are 64GB versions.