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- If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure that you have an active plan with your wireless carrier. Restart your iPhone or iPad. 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.
support.apple.com/en-us/108914
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Jan 11, 2024 · 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.
Mar 20, 2022 · 1. Remove the SIM Card and Reinsert It. 2. Clean the SIM Card and SIM Card Tray. 3. Reboot Your Device. 4. Update Your Device. 5. Turn Airplane Mode On/Off. 6. Try a Different Device. 7. Contact Tech Support. 8. Is the SIM Card Active? Advanced Troubleshooting. 9. Reset Network Settings. 10. Update Carrier Settings. 11. Factory Reset. 12.
- SIM Card. Your SIM card is actually a small computer chip embedded into plastic so it can be transferred easily across devices. Although they are resilient, they can become faulty, or may not be compatible with the phone you’ve transferred it into.
- Phone is Carrier Locked. Especially in the US, where the cost of a cell phone is often paid off in installments, service providers implement locks to prevent you from utilizing your equipment with competitors.
- Software Bug. Occasionally, incompatible or corrupted software can cause network issues with an iPhone. It is infrequent, but worth ruling out before embarking on deeper level hardware fixes.
- Faulty SIM slot. This occurs most frequently on newer models of iPhone. Beginning with the iPhone XR, some models feature a Apple iPhone Parts. On previous models, the slot is soldered onto the logic board.
- Make Sure You Have an Active Cellular Plan. While it might seem obvious, it's worth double-checking that your wireless carrier plan (such as with AT&T, Verizon, etc.)
- Restart your iPhone or iPad. If from out of nowhere you're suddenly seeing an "invalid SIM" or "no SIM" error message, you may have a software glitch causing problems with your device.
- Perform a Force Restart. If the regular restart didn't work, it's time to try the force restart. If you're unfamiliar with the force restart function, this is just a different way of cutting the power on your iPhone or iPad.
- Check for a Carrier Settings Update. A carriers settings update comes directly from your cellular provider, and helps to improve cellular network connectivity and provide support for new features.
Nov 12, 2021 · If an update is available, tap Download & Install. If it says “Your iPhone is up to date”, no iOS update is available right now. Eject and Reinsert Your SIM Card. So far, we’ve worked through a lot of iPhone troubleshooting steps. Now, let’s take a look at the SIM card.
Feb 2, 2024 · 1. Insert SIM in Another iPhone. 2. Check if Carrier Plan Has Expired. 3. SIM/eSIM Is Locked. 4. Is iPhone Locked to a Carrier. 5. Update iOS and Carrier Settings. 6. Reset Network Settings. Future Calling. Why Do SIM Cards or eSIMs Fail.
