You thought flock was bad? You haven't seen nothing yet. There is a reason RMS doesn't own a cell phone (and I stopped using one too, if you need a device get a Pine Phone, throw Mobian on it, disable the modem via dip switch, and get a USB wifi adapter for internet):
"US Police Now Armed With Israeli Spy Vans Simulating Mobile Phone Towers"
"If you thought Flock was bad check out Falconet. Falconet from Israeli company Cognyte serves as a cell tower simulator that intercepts cell phone data from all devices within range. Police mount these systems in Tahoes so the vehicles can collect information while driving through areas without any direct interaction with targets. This mobile approach generates ongoing records of phone locations and communications for everyone nearby rather than only suspects, which creates comprehensive movement profiles and bypasses traditional warrant requirements under the Fourth Amendment. "