I am facing this issue from 2 weeks.I couldn't able to access the sim in sim card manager and even it is not showing the signal. When i opened my sim card manager it is showing "checking" status.
Hello viewers there no issue with M30s device. I am facing trouble with Airtel sim only and i got good guidance from @sairohit97, @interchupipi and @veer to resolve my issue.Thank you for your immediate response.