I have 60Mbps download speed and when I do a speed test on my iPad Air 2, I get near that speed, but on my iPhone 6 Plus, I max out at 30-34Mbps. All my other devices can reach the highest speed but my iPhone. Using 5GHz signal with my Airport Express. Has been like this since iOS 8 when the phone launched last year. iOS 9 has made no difference. Any idea why my iPhone can't hit 60Mbps? I saw during the keynote for the 6S, that it's wifi is twice as fast as the 6 and can hit like 500+Mbps.