I’m trying do update and it’s saying I need to be connected to internet but I am connected so my phone is not getting cellular data
No data
Question marked as
are you connected to WiFi? You cannot do an iOS update using cellular data.
Update your iPhone, iPad, or iPod touch - Apple Support
If your cellular data is not working for other stuff.. see if this helps
If you see No Service or Searching on your iPhone or iPad - Apple Support