After speaking with Verizon I realized the aGPS function of my phone was worthless. In an emergency I'll take a Lat-Long from my real GPS and call 9-1-1 with my position. If cell coverage isn't good enough for a voice conversation, I'll text my niece and send her my Lat-Long (text messages can go out with a signal strength lower than that required for a voice conversation). She'll call 9-1-1 and relay the message. Haven't tested it yet.