Title basically says it all. I upgraded, since the upgrade my WiFi is constantly dropping out, leaving me to move right near my router to use it. I drop phone calls where I have full service constantly. I loved this phone, but since the upgrade I don't even want to look at it. I have done a hard reset, updated profile and prl. I am unrooted and trying to figure out, how and if I can go back? I am on tthe verge of switching to moto x, as much as I don't want to. I need a phone that operates properly, unfortunately I use for business and can't afford to constantly drop calls. Any help would be greatly appreciated.