1- What is the available technology world wide "if any" for the possibility of the satellite phones to use towers as a backup for communications indoor or in snowy weather or in case of satellite signal failure or interruption?
2- what are the commenly used frequencies for Mobile towers and satellite phones, are such frequencies are compatible?
3-Do we have SIM cards that can offer both services and compatible with such frequency deffirences?
4-Satellite phone --> satellite --> signal interruption (for any reason) --> shift to tower (GSM or any system) --> satellite --> satellite phone.
5- Satellite phone --> land satellite station "as in Arizona" toll free call --> satellite --> signal interruption (for any reason) --> shift to tower (GSM or any system) --> satellite --> land tower --> land lines or mobile telephone.
**Are I'm right in such flow chart or such sequance ( 4 and 5 ) , please correct me.