On settings- cellular date says error . Update is required to use cellular data on this iPhone

Manually update your carrier settings on your iPhone or iPad

tonyy82 Said:

"On settings- cellular date says error . Update is required to use cellular data on this iPhone: how can I fix this?"

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Thank you for the screenshot.

Troubleshooting Cellular Errors:

A. "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

B. Contact your Carrier:

Having issues with Cellular, contact your Carrier, asking them to configure this to the correct settings. They configure all of this in the SIM card.

the blue text I posted is a link. click on it and follow those instructions in the support article that opens

but yes, basically go to Settings > General > About and in theory you get a pop up prompt