for all those out there about to get an iphone on th $49 cap be warned that it is an 8 gig model and is only 3g not 3gS. If you want the 3gs you will need to fork out another $300 for the 16 gig 3gs mode.
I nearly got the wrong one, if you want to use if for astronomy apps you need to get the 3gs as the 3g does not have the built in compass.
Here is a comparison chart between the two models.
http://www.engadget.com/2009/06/08/i...e-of-the-tape/
Thanks
Sandy