My iPhone 8 Plus is showing "an update is required to use cellular data on your iPhone"
An update is required to use cellular data on your iPhone
[Re-Titled by Moderator]
iPhone 8 Plus, iOS 14
Question marked as
Have you checked for a Cellular Update from your provider by going to Settings > General > About? You may need to be connected to Wifi.
Manually update your carrier settings on your iPhone or iPad - Apple Support