Scenarios
Civilian with a normal device equipped with a SIM card connecting to a single server.
Strategic civilian such as governments, intelligence services or military in peacekeeping equipped with a normal device with a SIM card connecting to one or more servers located in a single location but with a switch service enabled that allows the re-direction of communications in different geographical areas of the planet.
Military on the war field with satellite smartphones that allow connection to servers located in a specific geographical area and/or direct or remote switching to data centers located in other areas of the planet to avoid communications blindness.