Why does my iPhone 4S think I'm in Chicago? I live in East TN but when I change my time settings to automatic, it says I'm in Chicago.  I have to manually set it to Atlanta so that I don't get the Central time zone. 

Before, it used to use Houston. So all I my google business searches would default to Houston. 

Is there any way I can convince this phone I live in Hixson, TN?
The iPhone (like pretty much all cell phones that support this feature) gets its timezone information from the carrier. Unfortunately many carriers send out the wrong timezone information and there's very little you can do about it other than switch off the Set Automatically option in the Date &amp; Time settings.