hee hee hoo hoo you should definitely bring the self-surveillance device that is registered in your name, covered in cameras, and reports its location at all times to a legally dubious event
Get yourself a Faraday Bag to keep your phone in. That way you can keep it on you but ensure it's offline. I have no recommendations on which, you'll have to test them. I have never used one personally, I'm just aware they exist.
There'd be no basis for this though, this is something would would definitely not be on by default. This suggestion reaches an absurdity that confuses real attempts at phone location obfuscation
It’s the basis for Inertial Navigation Systems that have been in use for aviation and maritime navigation since the mid twentieth century. The best method is leave it at home.
Oh dang you got a link for how to do it right?
Because I thought multiple layers of heavy duty foil was enough but now duckduckgo is saying it isn't but not really telling me what is.
I once tested if I could get any packets in or out through both wifi and cell and wasn't able to but while it was more advanced than just trying to call it, it wasn't exactly the most rigorous test either, fwiw.
I don't have a guide, but my understanding is radio waves being spooky ghost magic if you don't do the edges and opening's correctly that just have foil around it won't work. The radio waves will still go in and out. Apparently cell radio waves are much harder than just blocking the metal detectors or whatever when you're using a foil lined bag to shoplift.