anyway yeah DELETE YOUR FUCKING ADVERTISING IDS
Android:
Settings ➡️ Google ➡️ all services ➡️ Ads ➡️ Delete advertising ID
(may differ slightly depending on android version and manufacturer firmware. you can't just search settings for "advertising ID" of course 🔪)
iOS:
Settings ➡️ privacy ➡️ tracking ➡️ toggle "allow apps to request to track" to OFF
and ALSO settings ➡️ privacy ➡️ Apple advertising ➡️ toggle "personalized ads" to OFF
more details about the process here via the EFF
If you're doing something you don't want your government to know about, turn off you phone and leave it at home. Print out a paper map if you must.
Seriously, deleting an ad ID is insufficient. Your phone can even be tracked if it's off!
Simply do not bring the "see your location at all times" device to places where you could be persecuted for going. No even if you think you know how to turn that functionality off. I promise you don't know enough about how to actually turn off every possible avenue through which this could happen, because the advice of everybody who does is "hahaha, no just leave the phone at home".