Personal identifiers are such elements that identity you, the person, to other people or machines created and used by people. Your IMEI, MAC, NIC ID, etc are not considered by Apple, or any other of the data aggregators / sellers to be personal in nature. All have argued and won courtroom battles claiming otherwise by demonstrating that multiple persons can use the same device and nothing in the data mining algorithms can tell who is using it at any give time. They take advantage of the very strong odds that the devices they sell are NOT shared so they don’t need to collect PID to sell your data to an advertiser. They are identifying the device and they and the advertiser can, with a high degree of certainty, presume only one person ever uses it. --- Post Merged, Nov 23, 2017 --- That’s about what I am seeing. I have iMessage enabled. Going to finish the day, the reset my battery data. And turn off iMessage and see what up. Do it OLDschool.