What If You Get An Alert About The SIM Card In Your iPhone?

What if you get an alert that says Invalid SIM or No SIM Card installed?

get help with the sim card in your iphone

  • Make sure that you have an active plan with your wireless carrier.
  • Update your iPhone to the latest version of iOS.

Note: You can use iCloud or iTunes to back up your device before updating. And there’s a professional iOS backup tool called iFonebox could help you selectively back up your data.

  • Restart your iPhone.
  • 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.
  • Remove your 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 or from another phone manufacturer, it might not fit properly.
  • 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 to replace your SIM card.
  • If you still see an alert about your SIM card, contact Apple support.

What if your iPhone can’t be activated and you get an alert that says the SIM card is unsupported?

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  • Check the list on the System Status page. If the box by iOS Device Activation isn’t green, try to activate your iPhone later.
  • If asked to enter your password as you activate your iPhone, enter the password. (A password prompt means that Activation Lock might be enabled in Find My iPhone.)
  • Restart your iPhone.
  • If you’re using a cellular data connection, connect to a reliable Wi-Fi network instead.
  • If you still can’t activate, here’s how to activate your iPhone through iTunes instead:
  • Make sure that you have the latest version of iTunes.
  • Check that your computer has an Internet connection.
  • Open iTunes on your computer. With the cable that came with your iPhone, connect your iPhone to your computer.
  • Wait while iTunes detects and activates your iPhone:
  • If iTunes shows, “Set up as New” or “Restore from Backup,” it means that iTunes activated your iPhone.
  • If an error in iTunes says that the SIM card isn’t compatible, contact your carrier.


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