What if I have a regular SIM card and not an esim
How to hook my phone up with SIM card not an esim
iPhone XR, iOS 16
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Learn which size SIM card your iPhone or iPad uses ---> Learn which size SIM card your iPhone or iPad uses - Apple Support
For installing see Remove or switch the SIM card in your iPhone - Apple Support
Contact your carrier about supplying the size and kind you need. Your iPhone XR should accept both regular and eSIMS.