I thought this Android app would be of interest to this sub-group. It is a free Android app that automatically captures and saves the location for dropped calls, poor coverage and slow / no data connection. The app is called SignalRx and is available in Google Play. The dropped call location details can be sent to your Carrier by email as part of a technical support call or simply saved to track where you experience dropped calls / poor coverage. I find it useful to track my rate of dropped calls and see if it is going down or up. It also gives other useful details on the exact current signal strength, IP address, etc and a history of all call locations and call signal strength details.