my iphone 11has no sim card slot that I can find

All iPhone 11s have a SIM tray on the right side. See the following from Remove or switch the SIM card in your iPhone - Apple Support

Find the SIM tray on the right side:

• iPhone 11 Pro
• iPhone 11 Pro Max
• iPhone 11
• iPhone XS
• iPhone XS Max
• iPhone XR
• iPhone X

It's on the right side. Click here for a picture.

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