Almost all phones do use the base tower to speed up getting a fix with Assisted GPS: http://en.wikipedia.org/wiki/List_of_devices_with_Assisted_GPS http://en.wi

Almost all phones do use the base tower to speed up getting a fix with Assisted GPS: http://en.wikipedia.org/wiki/List_of_devices_with_Assisted_GPS http://en.wikipedia.org/wiki/List_of_devices_with_Assisted_G...