Both devices were freshly restored to iOS 9.0.2 and connected to the 2013 Apple AirPort Extreme. Each iPhone was connected to the AirPort Extreme using a 5GHz-only network. No other devices were connected to the wireless network at the time of the test and the downloads were performed at separate times. We cut them together for comparison.
As you will see in the video, there is a substantial speed improvement! Apple has now quadrupled the speed achieved by the iPhone 5s and increased speeds by around 33% from the iPhone 6. Apple says you should theoretically be able to get twice the speeds with MIMO, but we've yet to reach that. We peaked at a little over 500Mbps.
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