iPhone Browser
It appears Apple’s iPhone uses the following User Agent:
Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A543a Safari/419.3
A quick search of the log files turns up a hit for me. IP address is from Apple, so I’d presume it was using WiFi to connect via Apple’s corporate network, [...]

