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Sep 16, 2024 · 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. 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 ...
- 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.
If you receive an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure you have an active plan with your wireless network provider. If your iPhone is locked to a network provider, it can only be used with that network provider. To check if your iPhone is unlocked, go to Settings > General > About.
Aug 3, 2024 · Test for a malfunctioning SIM card. If your iPhone still says it has no SIM, your SIM card could have a hardware problem. One way to test this is by inserting a SIM card from another cell phone that you know works fine. If the No SIM Card Installed warning disappears after inserting another SIM, then your iPhone SIM is broken. You can get a new ...
Oct 15, 2021 · If that white sticker has a red dot in the middle, it means that sticker has gotten wet at some point, and water damage can sometimes cause the “No SIM” issue — but not always. Remember that while the SIM card is resilient to water, the internals of the iPhone are not. 3. Reinsert The SIM Tray.
Mar 20, 2024 · Step 1: Restart Your iPhone. Hold down the power button and turn your iPhone off, then turn it back on. Sometimes, all your iPhone needs is a quick restart. It’s the tech equivalent of a nap—sometimes it wakes up not remembering its woes. This can often re-establish the connection between your iPhone and your SIM card.
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Oct 10, 2022 · Make sure to turn off your iPhone before removing the SIM card. 5. Update iOS . When you don’t update your iOS from time to time, outdated iOS versions may cause trouble. If your iPhone says No SIM Card Installed, you can check if there’s any newer version of your iOS available or not. To update iOS, follow the steps below: 1. Head to Settings.
