If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps. ... Make sure that the SIM tray closes completely and isn't loose. If you use a SIM tray from a different model iPhone, iPad, or from another phone manufacturer, it might not fit properly. Try using another SIM card.23 sept 2021
How do I fix no SIM card service?
- Restart Your Phone. Press and hold the power button for more than 10 seconds to restart the phone, and let it re-detect the SIM card.
- Clean the SIM Card. Remove your SIM card and check whether the metal surface is stained. ...
- Try on Another Phone.
Why does my phone keep saying I don't have a SIM card when I do?
If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure that you have an active plan with your wireless carrier. Restart your iPhone or iPad. Check for a carrier settings update.23 sept 2021