I'm not sure if this of any interest but I've recently discovered that my iPhone 3GS is able to do 802.11n networking. As far as I know the iPhone 3GS will only work on a 802.11b/g or 802.11n with b/g compatible network. I have a wireless network consisting of a 1TB Time Capsule and an Airport Express. I've recently had trouble with the set up using 802.11n with b/g compatibility and switched my network over to 802.11n only in the 2.4GHz spectrum. I knew that I would loose the ability for my iphone to get on the network but was OK with that. I noticed today that my iPhone is now getting on the n only network. I can use it as normal but only with the 802.11n 2.4Ghz setting. I've tried the other 4 settings and it works only on the 802.11b/g compatible and the 802.11n only 2.4Ghz setting. I'm not sure if this has anything to do with the carrier update for MMS yesterday as I've only noticed this today. Has anyone else been using their iPhone 3GS on the N only (2.4Ghz) setting? If this is old news or was previously known, I apologize for the repost.