Personal Femto Satellite with its CDMA radio + smartphone+ SDR Software Defined Radio dongle and laptop running TCP/IP for gridless infrastructure less world communication.
Satellite has PV cells so it harvests it's own power, Battery or Solar charger mobile power for small Smart phones with SDR dongle as Ground station and laptop as Base station. No line power needed So gridless.
No Carrier dependence So infrastructure less.
Can be launched with a boomerang, balloon, drone, sailboat to a rocket or sea vessel.