hello when i update still my phone cant make calls or receive calls n it keeps on saying my storage is full yet there's still enough storage why is it saying so

Those are two separate issues.

For your Cellular Update Failed, see this, If you see a Cellular Update Failed or Apple Pay Not Available alert after iOS update or restart - Apple Support

For your iCloud issue: iCloud Storage is different from your iPhone (internal) storage. You might have free space on your iPhone but not on your iCloud. Hence the message. To fix that: Check out this article that can help you with managing your iCloud Storage:

Manage your iCloud storage - Apple Support