They can find your cellphone -ane any other 5g device, within meters.
Personally, I think the marketing video here https://www.o-ran.org/ Is one of the creepiest things out there. Yes, it's 'open' - as in the collusion of all relevant companies in the space have agreed on a standard to sell your data faster, and more openly, than ever before. Oran is a specification for building 3rd party apps that sit inside the antennas compute hardware themselves. Not only can your carrier now track the living shit out of you, but so can hundreds of third parties that have 'obtained your permission'.
5g is creepy as fuck, and absolutely promises the cel network will not be usable for a revolution.