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Why does my iPhone have a 'no SIM' error?
What if my SIM card is not installed on my iPhone?
What does no SIM mean on iPhone?
Why does my iPhone say 'invalid SIM' After resetting network settings?
Jan 11, 2024 · Learn how to troubleshoot the alert that says Invalid SIM or No SIM Card installed on your iPhone or iPad. Check your plan, restart your device, update carrier settings, check the SIM card, or contact Apple support.
- Remove the iPhone SIM card and reset it. Since the No SIM problem is often caused by the SIM getting slightly dislodged, the first fix is to try to put it back in place and make sure it's fully seated.
- Restart iPhone. If your iPhone still doesn't recognize the SIM, try the all-purpose fix for many iPhone problems: a restart. You'd be surprised how many issues are solved by restarting.
- Turn Airplane Mode On and Off. If you're still seeing the SIM error, your next step is to turn Airplane Mode on and then off again. Doing this can reset the iPhone's connection to cellular networks and may resolve the problem.
- Update iOS. If the problem continues to persist, check to see if there's an update to the iOS, the operating system that runs on the iPhone. You'll want to connect to a Wi-Fi network, or a computer, and have a decent amount of battery life before you do this.
- 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.
Apr 17, 2024 · If the mobile data line is off, turn it back on. Then check if you have service. If you don't see your mobile data line, contact your network provider to set up an eSIM or insert a physical SIM card. If you're using a physical SIM card, remove the SIM card and put it back in.
- Gaurav Bidasaria
- Insert SIM in Another iPhone. A good way to crosscheck if the SIM failure error is showing due to SIM or some iPhone setting is to insert the SIM card in another iPhone.
- Check if Carrier Plan Has Expired. Check your mobile carrier’s app or web page with your subscription account to check if your plan is still valid. You can call your carrier to ensure your plan has not expired.
- SIM/eSIM Is Locked. For security, every SIM card has a specific PIN (Personal Identification Number) to lock it. This is done to avoid unauthorized access to your SIM and using to make calls and send messages.
- Is iPhone Locked to a Carrier. You can buy iPhones directly from the carrier along with a mobile service plan. That means your iPhone can only be used with that particular mobile carrier’s SIM card or eSIM.
Jan 2, 2023 · If your iPhone says "No SIM" or "Invalid SIM", you may need to update your carrier settings, check your SIM card, or contact Apple or your carrier for help. Learn the possible causes and solutions for this common connectivity problem.
Nov 12, 2021 · A pop-up appeared on your iPhone saying “Invalid SIM” and you’re not sure why. Now you can’t make phone calls, send texts, or use cellular data. In this article, I’ll explain why it says Invalid SIM on your iPhone and show you how to fix the problem for good!
