So I guess you could say it’s…Metadata?

I 100% agree, but to be fair, in some jobs there really isn’t much to do. Lol.

With dumbphones, you’re usually limited to regular phone calls or SMS/MMS messaging.

That’s kind of the point.

Sure, you can’t do much with them, but by that very fact you also won’t have nearly as much data to be spied on.

Likewise, you can do much more with a smartphone, but that comes with a much higher surface of attack, and you also have to work a lot harder to keep all the data away from spying.