Before setting up my new phone I put my SIM card out of my old phone into my new phone then set the phone up but now my SIM card won’t work in either phones
Did you receive a new SIM card with your new phone? If so you may need to use the new one now. Prior to setting up your new phone, do you know if your old phone also was using an eSIM? It could be possible you had transferred to an eSIM which has now been deleted from your old phone.
