Greetings!
We appreciate your post in the Apple Support Community. If your iPhone is not reading SIM cards, it can be quite frustrating. First, try restarting your device, making sure the SIM card is properly inserted, and checking for any visible damage. If the issue persists, contacting your carrier for network-related checks is a good step. If all else fails, reaching out to Apple Support or visiting an Apple Store can provide more personalized assistance and potential solutions.
For English speakers, we have a dedicated community right here: discussions.apple.com. Since your message is in English, we warmly invite you to join us in that community.
Thank you!
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