If you encounter a SIM card error message, follow these steps
Restart your phone
Begin by restarting your phone,
Check SIM card insertion
Ensure the SIM card is properly inserted into your phone's SIM card tray.
Clean the SIM card and tray
Dust or debris can cause issues. Clean both the SIM card and tray.
Try a different SIM card
Test with another compatible phone to rule out SIM card issues.
Check SIM card compatibility
Ensure your SIM card matches your phone and network requirements.
Reset network settings
Access settings to reset network configurations.
Update phone software
Keep your phone's software up to date.