Ben Miller from Sniff WiFi comments:
Apple iOS devices have a terrible reputation in some WiFi circles. The author has heard complaints about mobility, stickiness, throughput capabilities and just about anything else under the sun. Heck, just today an article was published decrying the throughput (WHO CARES?) limitations of of the new MacBook Air (not iOS, but still Apple) was viral’d around the web.To check to see if the iPhone 5 matches the probing behavior of an Andoid device, I associated the iPhone to the office network on channel 36/+1 and started a capture on channel 44/+1. Then I got up from my chair and started walking around while continuing to use the iPhone.
Read more at: iPhone 5 Probes the Right Way, Too