Ukraine seizes 150k SIM cards from bot farm
bleepingcomputer.com
bleepingcomputer.com
If you are able to get an accurate estimation of how many sim cards a person has(via some sort of sampling), then you simply query the telcos for active sims and can get something decently accurate.
Wonder if it affects current Ukraine pop estimates.
Except if this was next to a mall or large train station or something that might cover for the density of "phones".
In other countries, SIM cards and mobile internet is stupid cheap.