I would expect that the NSA-like orgs have access to the data about where we travel, your spending habits, your comments on Reddit or HN, etc., etc. Basically, a profile on each of us. It might not be a collated readable profile as such, just a vector in a big NN describing our risk potential, but, all the same.

(Person you’re responding to isn’t OP.)

Live state of IMEI corresponding to every cell would be technically easy. Most of the stuff that goofballs imagine the NSA doing are technically impractical or even thermodynamically impossible.