[femto]

There are a number of projects that do this, using mobile phones to form ad hoc / mesh networks.

https://www.open-mesh.org/

https://briarproject.org/

https://en.wikipedia.org/wiki/Smartphone_ad_hoc_network

The original but now defunct?

https://en.wikipedia.org/wiki/Serval_Project

[lcnPylGDnU4H9OF]

https://github.com/permissionlesstech/bitchat

Seems similar to Briar but it has an iOS client.

[stogot]

I assume that these are blocked by sanction-following CDN firewalls? The first link paused to “check if I’m a bot” and I’m sure they check if I’m from Iran too