I got No Sim error for the second time after I changed my sim. It works fine a few months then it happening again saying No Sim.
iPhone 11, iOS 15
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, iPad, or from another phone manufacturer, it might not fit properly.
If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad ...
I got No Sim error for the second time after I changed my sim. It works fine a few months then it happening again saying No Sim.
