Sorry if this is "old news", 
and/or if it's a duplication of something that 
has already been hashed out on this list. 
(I do not have an iPhone, *nor* any [an]Droid, 
  so I do not even understand the issues... :-) 
This: 
http://www.networkworld.com/slideshows/2010/030210-apps-apple-iphone.html#slide16
seems to be saying that it can make possible tethering 
in places where the service provider "thought" that they 
were making it impossible. 
--
Mike Schwartz    

Glendale  AZ
schwartz@acm.org