I take this to be one of the short comings of bitcoin as, it always requires an Internet to work it. On like local financial institutions for which, they've got a substitute form of communicating your financial payments with various institutions without having to use the network.

For most developing nations, they've got the unstructured supplementary service data (ussd) that opens a gateway to enable transactions for low income earners and people without Internet enabled devices to have unrestricted tra sections.

I think this should be available for cryptocurrency as well. Tapping into local network to have it broadcasted or I don't know what am saying... just trying to wrap my head about how this is obtainable in fiat and the possibility of adopting it for crypto transactions.