The Verizon phone uses CDMA so there is nowhere to put a GSM SIM. But a bit of hacking allowed him to add a SIM card slot to it. Even though he’s not the one who originally found this hack (XDA ...

There's a very good chance your phone has a SIM card right now, especially since CDMA networks have been almost completely supplanted by LTE networks. Those cards allow your phone to connect to ...