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Jan 11, 2024 · If you use a SIM tray from a different model iPhone, iPad, or from another phone manufacturer, it might not fit properly. If your device has a physical SIM card and you've completed the previous step, try using another SIM card. If you don't have one, go to your carrier's retail store and ask them to test with another SIM card. You might need ...
Apr 17, 2024 · Update your iPhone or iPad to the latest version of iOS or iPadOS. Go to Settings > Mobile Data. Then: For iPhone, tap Mobile Data Options, then turn on Enable LTE. For iPad, turn on LTE. If you still see No Service after following these steps, contact your network provider.
Nov 12, 2021 · An iPhone usually says a SIM is not supported because your iPhone is locked to your carrier. This means you can’t insert a SIM card from a different carrier if you switch. To check if your iPhone is locked, open Settings and tap General -> About -> Carrier Lock. An unlocked iPhone will say No SIM Restrictions.
- 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.
Sep 5, 2023 · Try a simple reseat of the card. Eject the SIM tray. Make sure the card is properly oriented in the cutout. 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.
Nov 12, 2021 · Turn Airplane Mode On and Back Off. The first thing to try when your iPhone says Invalid SIM is to turn Airplane Mode on and back off. When Airplane Mode is on, your iPhone disconnects from cellular and wireless networks. Open Settings and tap the switch next to Airplane Mode to turn it on. Wait a few seconds, then tap the switch to turn it ...
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