If you have an iPhone 12, there are a few ways to insert a sim card. The easiest way is to use the phone’s home screen. Tap on the three lines in the top left corner of the screen and select “Add SIM Card.” Once you’ve added your sim card, you’ll need to enter your pin number. You can find this number on the back of your sim card. Once you’ve entered your pin number, tap on “Create Sim Card.” The next step is to choose your network. You can choose either AT&T or Verizon. Once you’ve chosen your network, tap on “Create Sim Card.”