if I use someone else’s SIM card and put it in my phone, will I have to sign into their Apple ID or will it pop up as new
I’m just wonder if I were to use my dads SIM card, if it would make me sign into his account when I put it in my phone
Question marked as
No. The sim card has no connection to the Apple ID.
If you put your dad's sim card in your phone you will, however, get is cell number on your phone and receive his calls and messages on your phone, and his phone will no longer have service, and be unable to make or receive calls or send or get messages.