Namaste, iam William Pitsch, Have a nice day.

Why Does My Phone Say Could Not Activate Cellular Data Network? [Solved]

It’s possible you can’t connect to cellular data networks because you’ve turned off cellular data. To fix that, go to Settings > Cellular > move the Cellular Data slider to on/green. If the slider was already set to on/green, try moving it to off/white, waiting a few seconds, and then putting it back to on/green.12 Nov 2021

iPhones: How to Fix “Could Not Activate Cellular Data Network”

If you are getting the message "

Could Not Activate Cellular Data Network On iPhone

If you don’t know

Iphone XS Max could not activate cellular data network | What is an Iphone APN and Profile

A simple solution to a common problem on iphones.