i was reading this article and it says the iphone can be upgraded to 3g with a software upgrade:
http://macdailynews.com/index.php/weblog/comments/12273/
and what kind of 3g would it be? wcdma? hsdpa? 2100mhz/850mhz/1900mhz hsdpa or support all mhz?
and would this mean video calling would be possible? does the iphone have a camera for video calling?
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