What if your cellar data is not working
How do you fix your cellar data
iPhone 7, iOS 14
Question marked as
Does voice calling work? If it does, contact your carrier. If it says No Service or Searching see→If you see No Service or Searching on your iPhone or iPad - Apple Support
As you have an iPhone 7 see if this applies to your model→iPhone 7 Repair Program for "No Service" Issues - Apple Support