So you might have noticed a few reviews of Verizon's iPhone 4 crop up last night, nothing unusual about that, but a couple of its reviewers have had something to say about AT&T's version of the phone as well. Walt Mossberg and David Pogue (who has since stricken the date from his review) both pinpoint February 13th as the date when they expect AT&T to turn on the Personal Hotspot capability that Verizon's iPhone will have from launch. That's expected to happen with an
