Comment He's incorrect on the Georgia code (Score 1) 1440
http://goo.gl/rk1qmK
The verbiage, regarding sending texts and similar communications, says "is used to" communicate "with another person", not "can be" or "may be" so you would have to actually use the device to communicate with somebody to be ticketed.
Therefor, using the GPS function of your phone isn't covered under the violation.