To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.
Changing physical SIM cards on your phone is always a fiddly business. First, you have to root for the little SIM tray tool ...
You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...