iPhone 13 with TracFone sim card
Hello, I am buying a new iPhone 13 from Apple online that has the selection to “connect to any carrier later”. I was told the phone would be 100% unlocked forever, but I want to make sure.. I want to use a Walmart Family Mobile (which is a TracFone SIM card), but I heard that these SIM cards will lock my iPhone to their service? Is this correct or am I mistaken? Also, is it fine if I put my old sim in my new phone or would this mess something up and I should get a new one of those airtime SIM cards? Please let me know, thanks!