Along with removing all my old data from my phone and resetting to factory settings, is there anything I have to do with the SIM card? Thanks!
Keep the SIM card unless you are selling the line along with the phone.
Once that SIM card line is transferred to another iDevice that SIM becomes invalid.
Doesn't help the new iPhone owner yet doesn't hurt you either.
Along with removing all my old data from my phone and resetting to factory settings, is there anything I have to do with the SIM card? Thanks!