Okay, so you're starting to come down from your post-purchase iPhone 4 gadget high and you're getting into the habit of using it just like you would any other phone. FaceTime was a neat trick on day one, sure -- but if there's a single thing significantly limiting its day-to-day usefulness, it's the fact that you can only use it over WiFi at the moment. Apple claims that they've got more work to do with carriers to make it usable over cellular, but how legit is that claim?
Seeing how MiFis and other mobile hotspot devices have quickly become a staple of doing business for us,
