Makes me think... what is really needed tech wise to act as a spendable bitcoin wallet?
If you have a hardware wallet that hardly ever needs to be recharged (solar powered?) and is highly portable + paper wallets.. no need for constant electricity.
mobile phone or raspberry PI both have a low power requirement. id say a cheap android phone as a rPI needs constant power to rn, where as an android can last days on just a few hours charge.. but then we start getting to the requirement of internet access/cell towers.
if the kid needed to make his own FM radio.. i guess his village wont have internet