I can do both at the same time.. talk and surf the web 'cause i have android phone on 4G network... thanks to sprint.
And I don't care about iPhone... on at&t or verizon network :)
not really... false alarm, there's other update but no 2.3 :)
source:
http://www.engadget.com/2010/12/06/android-2-3-update-now-rolling-out-to-nexus-one-owners/