If I buy a used iphone that was already used with atnt, do I have to pay for activation
I have a SIM card of an iPhone 7 that is paired to my parent's plan. They got the phone basically for free, so they pay for the phone every month and then they get the account credit for that payment right back making the phone essentially free as long as they hold onto it. Im looking for a new phone because the 7 is getting slow. If I buy a used (paid off) iPhone that was already used with ATNT, will I have to pay for the activation fee, or can I just swap the sim from the 7 to the new xr and everything would work...