Does The iPhone 13 Have A Sim Card? What You Should ...
Does the iPhone have a SIM card? Which iPhone models use which types of SIM cards? Which support eSIM? How do you remove the SIM?
iPad information series: Can you put a sim card in an iPad?
iPhone 13 models and earlier also have a SIM tray for a nano-SIM card—you can use a nano-SIM card from a carrier. iPhone 13 models and later support Dual eSIM.
How To Set Up & Use Dual SIMs On Any iPhone (Since 2011) | Macworld
If you have an iPhone 12 and iPhone 13 (excluding the iPhone SE), the SIM card slot is located on the lower left side below the volume buttons.