nostr:npub137gtnwfxzqmwgep0d4rsl5dcuhnhdfljr9dn306qt6fmrpp0n9jq026d5m

So that sounds to me like the opposite of using one's phone as a server.

If I've already paid for my phone's hardware and paid for a data plan - why should I pay a 3rd time for IPFS publishing?