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Sep 16, 2024 · Check for a carrier settings update. Go to Settings > General > About. If an update is available, you'll see a prompt to select OK or Update. If your device has an eSIM, contact your carrier. If your device has a physical SIM card, remove your iPhone SIM card or iPad SIM card from the SIM card tray and then put the SIM card back.
If your device has an eSIM, contact your network provider. If your device has a physical SIM card, remove your iPhone SIM card or iPad SIM card from the SIM card tray and then put the SIM card back. Make sure the SIM tray closes completely and isn't loose.
Sep 6, 2022 · If you still see an alert about your SIM card, contact Apple support. Following these steps may help with resolving the message you see popping up about the SIM card. If not, follow the link above for contacting Apple Support.
- Remove Your SIM Tray. If your SIM tray is full of dust, your iPhone wouldn't be able to read your SIM card. Here's how to fix this: Switch your iPhone off.
- Toggle Airplane Mode. Several users, including myself, have been able to fix the SIM card error by switching Airplane Mode on and off. You would stop connecting to cellular networks, so any network error would be cleared.
- Force Restart Your iPhone. There are various problems that could arise because of isolated glitches. However, a force restart should help. All the apps and processes would be closed to erase the glitch.
- Update iOS. When was the last time you updated iOS? If it's been a while, you could be facing a bug. You probably already know if you're using an older iOS version.
I believe its just a sim card issue, head over to your service provider and ask them for a sim card replacement. Should come back to normal, if not go to Apple maybe there is a fault with the phone or something.
Aug 1, 2022 · Learn what to do if your iPhone or cellular iPad isn’t recognizing the SIM card and shows “No SIM,” “SIM Not Valid,” or other SIM-related errors. You can’t make regular calls, use mobile data, or send and receive non-satellite texts if there are SIM-related errors on your iPhone.
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Reinsert the tray and retest. Try the SIM from a friend or family member with the same cellular carrier. If it works, replace your SIM card. You can request one from your service provider, or visit one of their physical locations. As a workaround, use your phone’s eSIM instead.