@Hyolobrika I think this might protect you from non-state actors but correlating the activities of 8 random users over a month who behave exactly the same on the network probably isn't as hard as you might think. I interviewed with Palantir a while back and one of the features of their service (provided to government) was to unmask burner phones and stuff like that. I'd imagine the same principles apply. Your behavior needs to change along with the rotating ID in order to not be easily followed to the new identifier.
@Hyolobrika :shrug: who knows, it might help some but the thing is the behavior is what they are looking for. Do you go to the same place every day and leave the phone sitting still or on a private wifi or powered off every day? Do you start moving around at the same time every day? Even if the ID changes and your web traffic is obfuscated these patterns likely emerge quite clearly when the data is fed into something like the Palantir system I mentioned.
@Hyolobrika I think the best way to conceal location data is to not volunteer it. Avoiding taking your phone with you when it isn't needed is much less likely to leak location data than rotating device IDs I would imagine. Powering the phone off at random times and doing other things to disrupt patterns would also probably also be good.
@Hyolobrika yeah anything to disrupt patterns is good. I think to fully trust airplane mode you would need open source hardware that's been audited and can be trusted to actually turn off all radios, but removing the Sim if you have one should be effective I would imagine.
That said if you are near iPhone users their phones are looking for other mobile devices and reporting things they see to the network even if they aren't network compatible devices.
@Hyolobrika sort of. you can take things apart and inspect them but pcbs are several layers thick and following traces between layers is kind of tricky, especially without any schematics. As far as code goes I think the same kind of thing applies. It's easy for complexity to exceed your capacity of understanding without the source in front of you so you can see how everything fits together.
Another defense against potential issues with airplane mode would be to cage the device until needed so that even if the radios are on it can't communicate.