I have had my phone since release day and it has been great. I noticed this weekend that my 3G coverage has become very spotty and today I don't have any 3G coverage while 3 of my coworkers have 3G. We all have full bars but I'm on Edge and they are on 3G. We all have the latest software update etc but I don't have 3G. Is it the phone or the software? Should I take it in to the store to get it swapped?