this is true of google android and iOs, however I understand it is NOT the case for graphene OS
but you have verified gaussmeter evidence that it is true?
I don't think you'd use a gaussmeter but rather a mobile base station so you can measure the incoming pings This was the approach used by SRLabs when testing their Blue Merle software for IMEI switching https://github.com/srlabs/blue-merle?tab=readme-ov-file#imei-randomization
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