Erm, dude, you did look at the graph on the Mastodon post linked to, right ?
You see that bit where it falls off a cliff to 0% netblocks ?
"white SIM card" or not, you're not getting internet if there's no BGP routes being announced.
The only way around 0 BGP announcements would be satellite...
I suspect your "white SIM card" was a pre-war status-quo ...