iPhone “No SIM Card Installed” issue and how do I fix it?

The "No SIM Card Installed" error on an iPhone can arise from various causes. To troubleshoot, consider trying the following steps:

Restart the iPhone: Sometimes, rebooting can fix minor issues. Power off the device, wait briefly, then power it back on.

Reposition the SIM card: Turn off the iPhone, use a SIM ejector tool or paperclip to remove the SIM tray, and carefully place the SIM card back in. Ensure it's securely inserted.

Inspect the SIM card for damage: Look for signs of wear or physical damage. If the card appears damaged, you may need to request a replacement from your service provider.

Update the iPhone’s iOS: Ensure the device is up to date by navigating to "Settings" > "General" > "Software Update" and installing any available updates.

Update Carrier Settings: Go to "Settings" > "General" > "About." If there’s an update for carrier settings, a prompt should appear to install it.

Reset Network Settings: If network issues persist, resetting network settings can help. This can be done by heading to "Settings" > "General" > "Reset" > "Reset Network Settings." Be aware that Wi-Fi passwords and other network preferences will be reset.

Confirm Carrier Settings are Current: Make sure your carrier settings are up to date by connecting to Wi-Fi and checking "Settings" > "General" > "About." If prompted, update the settings.

Reach Out to Your Carrier: If none of the troubleshooting steps work, contact your mobile carrier. They can help verify if there’s an issue with your account or advise if a new SIM card is required.

If the problem persists after these steps, the issue might be hardware-related, and a visit to an Apple Store or authorized service center may be necessary.