Let's say I buy a second-hand USB dongle and put in a pre-paid and unregistered data SIM card. At the time of the purchase of both items, my face was covered, I paid cash and I live 500 miles from the purchase location.
I stick the dongle into my laptop that runs a Linux live operating system. Once in a while, I go to a certain website where my IP is revealed. My adversary is a government agency with massive resources. How accurately can they locate me?
As far as I understand, the IMEI of the device and SIM info will be broadcast to the Internet provider. Also, with cellular triangulation they will be able to pinpoint to an area. I understand that I can be located to some extent, but to what extent? How close can they get? Within 1 mile? within 100 meters? within 10 meters?