Something I’ve Been Wondering

It surprises me that the iPhone 3G S does not support 802.11n wireless networking. Why is that?:

  • Because 802.11n is still a draft standard? (That hasn’t stopped Apple from using it in computers.)
  • Do 802.11n chips draw more power or produce more heat than 802.11b/g chips?
  • Is the chip for 802.11n physically larger than a b/g chip?
  • Is there some bottleneck in the 3G S that would keep 802.11n from being useful?