How to solve “your iPhone cannot make and receive calls or access cellular data until it has been updated “ and not directed any cellular network after update iOS 13.7 in my iPhone 8 . “How I can solve this”

Hey prakash715,

We see that your iPhone shows no service, and we'd like to help!

Please start with the troubleshooting in this help article: If you see No Service or Searching on your iPhone or iPad - Apple Support

Just to confirm, did you already updated your iOS to version 13.7? If you're having issues updating, try following the steps from here: If your iPhone, iPad or iPod touch won't update - Apple Support

If you continue to experience the same issue, check out this article here: If you can't make or receive calls on your iPhone - Apple Support

Let us know how it goes!

Warm regards.