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I'm not sure if MAC addresses are used in cell network negotiation, and they are easily spoofed, but the cellular network provider could certainly link an IP address to a device id. then again, most criminal "burner" phones are not internet enabled anyway

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IMSI, IMEI, MSISDN, etc.

Systems to associate 'burner' phones to individuals, with patterns of metadata, have been commonplace for decades

https://github.com/kimgr/asn1ate/blob/master/testdata/public...

yes those can be used as device ids and in network negotiation. harder to spoof as they're a lower abstraction layer than MAC addresses

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