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  2. Jan 13, 2019 · Generally carriers replace SIM cards for free or very low cost, as that's what allows you to use their network. If the SIM card failed, you could still use your iPhone on WiFi networks to do everything but make phone calls.

  3. Feb 17, 2024 · No SIM Card Detected: One of the most prevalent SIM card issues on the iPhone 11 is the "No SIM Card Installed" or "Invalid SIM" error message. This can occur due to a variety of reasons, including a faulty SIM card, improper installation, or software glitches.

  4. Sep 11, 2024 · 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.

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    If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps.

    1.Make sure that you have an active plan with your wireless carrier.

    2.Restart your iPhone or iPad.

    3.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.

    4.If your device has an eSIM, contact your carrier.

    5.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 that the SIM tray closes completely and isn’t loose. If you use a SIM tray from a different model iPhone, iPad, or from another phone manufacturer, it might not fit properly.

    Find what’s been asked and answered by Apple customers.

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  5. Try a different SIM card. You can get one at your carrier’s retail outlet or ask your carrier to test your phone with a different card. Replace your current SIM card with a new one, if...

    • 5 min
    • Jackie Dove
  6. iPhone Invalid or No SIM. Is your iPhone not detecting your SIM card? Does it say "No SIM" or warn the SIM is invalid? Have a look at these fixes.

  7. Aug 1, 2022 · 1. Enable and disable Airplane mode. 2. Turn on the SIM line. 3. Restart your iPhone. 4. Gently wipe and reinsert the SIM card. 5. Remove the case, cover, or lamination from your iPhone. 6. Check if your SIM card is active or not. 7. Remove the SIM PIN using a different phone and reinsert it into your iPhone. 8. Try another SIM card. 9.