Gregory's ServerOopsies!
Interesting thing to consider - you can change the SIM Card all you want, and all that does is change the IMEI (Phone number). But no matter what you do that phone is always known anyway, by its IMSI - which is fixed and part of the phone's cellular radio - so once you connect to a cell tower you, individually, will always be known and always able to be tracked by that unique identity. The IMEI changes with your SIM Card.
After you make a couple of calls to friends, who in all likelihood are not unique because both of them historically receive calls from you, your actual identity is known.
The only way on a retail level that I know you can turn your phone back into a blank slate is to change the cellular radio, and the only phone I know of is readily equipped to do this out of the box is the Librem5, which incidentally, is the only phone endorsed by the FSF, IIRC.
RT: https://fosstodon.org/users/RTP/statuses/108485212291426292
Interesting thing to consider - you can change the SIM Card all you want, and all that does is change the IMEI (Phone number). But no matter what you do that phone is always known anyway, by its IMSI - which is fixed and part of the phone's cellular radio - so once you connect to a cell tower you, individually, will always be known and always able to be tracked by that unique identity. The IMEI changes with your SIM Card.
After you make a couple of calls to friends, who in all likelihood are not unique because both of them historically receive calls from you, your actual identity is known.
The only way on a retail level that I know you can turn your phone back into a blank slate is to change the cellular radio, and the only phone I know of is readily equipped to do this out of the box is the Librem5, which incidentally, is the only phone endorsed by the FSF, IIRC.
RT: https://fosstodon.org/users/RTP/statuses/108485212291426292