Afaik it is possible to send/receive by radio, and there is also Blockstream satellite (was sold out last time I looked a while back)

.. would still need electricity but small portable solar panels could provide that.

For now tho both of those solutions are not (at all) widely deployed, and might never be or might take a v long time.

Bottom line tho is if power/internet went down for any significant time frame, we’d have much bigger problems than accessing our bitcoin.

Literally everything relies on these things, including hospitals, banks, transport, production, even farms these days.

(Def recommend having all the basic prepper stuff at home, and a go-bag if one needed to evacuate, a ham radio, water filters etc etc. Also some cash, since that would likely work for at least a minute, and/or small denomination silver coins.

Tools, ammo, pain meds, dry food etc can be traded too.)