All the apps on your phone have access to the phone identifier. As well as other information, like your Google account. It’s pretty trivial to tie a phone to you.
If someone really wanted to find the person, I imagine they’d find where the signal is coming from for that device, and just narrow from there. If it always goes to/from where John works and lives, it might well be John’s phone.
They got video of you buying them, though
They have your identity the moment you put the sim in the phone. The phone have unique identifiers that are recorded when sold.
Buy the phone used and/or with cash. And never put any SIM card in it that can be linked back to you or someone you know.
All the apps on your phone have access to the phone identifier. As well as other information, like your Google account. It’s pretty trivial to tie a phone to you.
If someone really wanted to find the person, I imagine they’d find where the signal is coming from for that device, and just narrow from there. If it always goes to/from where John works and lives, it might well be John’s phone.