Please see my initial post as per below:
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Hi,
I am also having issues on my iPhone 6plus 64gb which is running IOS 8.0.2. I have reset the network settings on the phone. I am using with the following equipment: Apple Airport Extreme and Apple Airport Express.
I have fully reset the Extreme and Express re-flashed then and setup from new but this does not resolve the issue.
The WIFI speeds are fine when I test on my laptop in other rooms I get 72Mbs on my Mac if I test with my iPhone 6 plus I only get around 30mbs. This is present on both 2.4Ghz and 5Ghz frequency.
I am also using WPA2 and changed the encryption key. I am at a loss as to what else I can try next? Does anyone know when IOS 8.0.3 will be coming out? Or where you can download a beta version to test to see if it helps resolve the issue?