sim card open iphone

Hello joshgetigan09,

Thank you for reaching out to Apple Support Communities.

These steps can guide you to set up an eSIM or install a physical SIM:

"Set up an eSIM

Supported iPhone models can digitally store an eSIM provided by your carrier. If your carrier supports either eSIM Carrier Activation or eSIM Quick Transfer, you can turn on your iPhone and follow the instructions to activate your eSIM during setup.

If you already completed setup, you can do any of the following:

• eSIM Carrier Activation: Some carriers can assign a new eSIM directly to your iPhone; contact your carrier to initiate this process. When you receive the “Finish Setting Up Cellular” notification, tap it. Or go to Settings  > Cellular, then tap Set Up Cellular or Add eSIM.
• eSIM Quick Transfer: Some carriers support transferring a phone number from your previous iPhone to your new iPhone without needing to contact them. Make sure you’re signed in with your Apple ID on both devices, or make sure your previous iPhone is unlocked, nearby with Bluetooth turned on, and running iOS 16 or later.
• On your new iPhone, go to Settings > Cellular, tap Set Up Cellular or Add eSIM, then tap Transfer From Nearby iPhone or choose a phone number. On your previous iPhone, follow the instructions to confirm the transfer.
• Note: After your phone number is transferred to your new iPhone, it stops working on your previous iPhone.
• Scan a QR Code provided by your carrier: Go to Settings > Cellular, tap Set Up Cellular or Add eSIM, then tap Use QR Code. (You may need to tap Other Options first.) Position iPhone so the QR code appears in the frame, or enter the details manually. You may be asked to enter a confirmation code provided by your carrier.
• Transfer from a different smartphone: If your previous phone isn’t an Apple iPhone, contact your carrier to transfer the phone number.
• Activate service through a participating carrier’s app: Go to the App Store, download the carrier’s app, then use the app to activate cellular service.

Note: If prompted, connect your iPhone to an available Wi-Fi or cellular network. eSIM setup requires an internet connection.

Install a physical SIM

You can get a nano-SIM card from a carrier or move it from your previous iPhone.

Note: Physical SIM isn’t compatible with iPhone 14 models purchased in the U.S.

1. Insert a paper clip or SIM eject tool into the small hole of the SIM tray, then push in toward iPhone to eject the tray.Note: The shape and orientation of the SIM tray depend on the iPhone model and your country or region.
2. Remove the tray from iPhone.
3. Place the SIM in the tray. The angled corner determines the correct orientation.
4. Insert the tray back into iPhone.
5. If you previously set up a PIN on the SIM, carefully enter the PIN when prompted.

WARNING: Never try to guess a SIM PIN. An incorrect guess can permanently lock your SIM, and you won’t be able to make phone calls or use cellular data through your carrier until you get a new SIM. See the Apple Support article Use a SIM PIN for your iPhone or iPad."

Additional details can be found here: Set up cellular service on iPhone

If you are still having issues, can you provide a few more details? What kind of SIM are you attempting to use? Which device and iOS version do you currently have? Also, what happens when you attempt to set up your SIM?

Cheers!