Cellular network connection error

jinendra259 Said:

"Cellular network connection error help"

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Troubleshooting Cellular Network Connection:

A. Start Here: If you See a Cellular, Ultra Wideband, or Apple Pay Issue Message After an iOS Update or Restart - Apple Support

B. "No Service":

Is "No Service" shown on the top-left corner of your screen? If so, go here to fix that: If you See No Service or Searching on your iPhone or iPad - Apple Support

C. Install a Cellular Update:

It might be prompting you for a cellular update to install. So, go here for that. Update your carrier settings manually on your iPhone or iPad - Apple Support

D. Update the iOS Using a Computer:

• Use my User Tip:  Update your iPhone Using a Computer - User Tip
• IMPORTANT: If you have an option to update, however, then be certain you backup your iPhone first. That way, you will have something to restore your iPhone from should anything go wrong with the update