I thought I'd write up a response to this question from well-known 4th Amendment and CFAA lawyer Orin Kerr:
Question for tech people related to "geofence" warrants served on Google: How easy is it for a cell phone user, either of an Android or an iPhone, to stop Google from generating the detailed location info needed to be responsive to a geofence warrant? What do you need to do?— Orin Kerr (@OrinKerr) September 15, 2021
(FWIW, I'm seeking info from people who actually know the answer based on their expertise, not from those who are just guessing, or are who are now googling around to figure out what the answer may be,)— Orin Kerr (@OrinKerr) September 15, 2021
First, let me address the second part of his tweet, whether I'm technically qualified to answer this. I'm not sure, I have only 80% confidence that I am. Hence, I'm writing this answer as blogpost hoping people will correct me if I'm wrong.