IPhone 3G includes a Navigation GPS.
The iPhone 3G is internally similar to its predecessor , but included several new hardware features , such as GPS , 3G data and tri-band UMTS/HSDPA.
The Global Positioning System -LRB- GPS -RRB- , originally Navstar GPS , is a space-based radionavigation system owned by the United States government and operated by the United States Air Force.
