I will be forever grateful if some of you that have upgraded to the iPhone 4S on AT&T can answer this one question for me: has the new antenna improved your cell service or decreased your dropped calls? My service has been so bad with AT&T that I think they are ready to let me leave without paying the ETF (x2 my wife and I). I love the device and features, but I want to be able to use it as a phone without constantly worrying about dropped calls. My friends/family have grown used to having dropped calls with me on a daily basis. I have went through all of the tech support and called CS several times. I have cleaned the SIM, changed the SIM and Apple replaced my iPhone. Almost every time I call them about dropped calls, the call gets dropped. I know that any replies I get may not necessarily apply to my area, but I just want to see if the new antenna is making a difference with people who use it.