That’s also why they tend to have cellular modems that have poor support for US frequencies.

Interesting. I’ve not heard of FuriOS, but if it is a Linux phone that actually can be used with US carriers, makes calls and supports SMS/MMS, and can do VoLTE that’s a actually a pretty big deal.

While pretty neat, I’d have a hard time even calling the WiPhone a phone if it doesn’t have a cellular modem. You’re entirely dependent on having a wifi connection. I suppose it could serve as a replacement for a landline, but that’s about it.

Electricity would be tempting. If you have access to water, you can boil it to make it safe. Run a refrigerator to store food. A convenient source of heat for cooking. Stay warm in the winter, stay cool in the summer. Lights for when it’s dark. Use power tools to build things. Listen to music, watch movies, play those old Nintendo games.

Even after some time when your electronics break down and scavenging working ones gets tough, it’s not difficult to build things like simple resistive heaters. Making crude incandescent light bulbs wouldn’t be impossible either.