A little...

Well, it is the right number of syllables, isn't it?

Your Verizon number can be also using IP-based services for MMS. But where you set that up is usually specific to your carrier OS, etc. For me, for example, I have an option in the app that goes with my carrier, which is Mint, because I'm a cheapo.



I'm not sure about graphene,( although I'm about to install that on this phone) but most Android distributions also have a Wi-Fi calling setting, which can also imolicitly work with texts.

https://www.verizon.com/support/wifi-calling-faqs/

Based on the info you've given, I would put a little money on it being somewhere in there.

And I appreciate the Zap consideration and I'm surprised it didn't work. I think I have a wallet of Satoshi address set up. Huh, I wonder what's wrong. But you don't need to zap me. 😁

Yes, I answered your earlier question with some ideas, but you confirm here that you are enabling Wi-Fi, and messages can go over Wi-Fi under the right circumstances. There's more than one way that could happen.

So there are possibilities here.

First of all, if you are correct that you have received and sent messages while in airplane mode, then you have to have another network connection somewhere and the most likely (only one likely) would be Wi-Fi, which can be turned on in airplane mode.

You say that you sent and received SMS, which is a specific protocol. That should be impossible. But if you mean that more generically and that you sent a text message and received a text message, there are other protocols that can use Wi-Fi. Like RCS.

And it is possible that you are using a VoIP like layer for your texting if that is enabled by your phone and carrier, etc. SMS over IP gateways can be used, but you would certainly know if you would set something like that up.

So chances are, you are using a messaging app that will fall back to IP texting one way or another, or you're using a protocol that does that natively like RCS.

Monero has the same problem, but achieved a slightly different way. And it is thanks to its best-in-class privacy. It was easy for exchanges to be deeply short Monero and close down withdrawals for "technical reasons". Remember that?

Monero has, from the very beginning, kept away from the digital gold type narrative. Spend Monero, don't buy it.