Unfortunately the term GPS gets substituted for aGPS or navigation services far too often so people get a phone with a navigation service or aGPS and assume it has GPS. Then there are phones that are the same model but has a GPS on one carrier and not on another. The GSM version of my phone had a real GPS and my phone has only aGPS. I just upgraded to a new phone with a true GPS but needs the cell service to download maps. I've contacted Garmin asking when they will have software ready that can utilize my garmin maps