Verizon's VZNavigator product uses assisted GPS (aGPS) which is a combination of the built-in GPS and network-based location based services. aGPS has a significant advantage over "standalone GPS" in that it can fix a location even without line of sight. In your article, you stated that Verizon BlackBerry customers had to "settle with triangulation options instead." This statement is extremely misleading. While triangulation is involved with aGPS, aGPS uses several other network components to provide very accurate location information. aGPS as a whole is much more accurate and consistent than just using the GPS receiver. This extra functionality costs more to offer, and therefore commands a certain premium. It is also worth noting that the Storm and Tour both support Standalone GPS, which means that they will work with Google Maps, etc. at no additional cost, in addition to supporting aGPS applications such as VZNavigator.