Thanks for the feedback.
So, just to confirm, you had a weaker signal on 2.4 GHz (2 bars) than 5 GHz (3 bars) when using your iPhone? Was this relatively close to the router?
I can't wait to try mine out and run tests on both bands in my usual 3 test locations so I can compare them to my RT-AC66U results:
http://www.smallnetbuilder.com/forums/showthread.php?t=10577
By the way, my last sentence had a typo which I have since fixed (I meant of course just 5 GHz being needed according to the reviewer).
I see you knew what I meant of course.
no no. 5ghz (2bars) 2.4ghz (3 bars) but the 5ghz was still a lot faster.