i tried so many times to activate my facetime with my phone number and every-time activation unsuccessful !! and i my software is up to date !! and i followed all the steps u shown and nothing happens!!! i dont know what to do ?!!!

Hi rodaina80,

Welcome to the Apple Community, where some of us do what we can to help each other troubleshoot.

Many others seem to use FaceTime ok ... so wondering if something is missing.

Wondering if it might help to begin with this Apple Support article:

(You must set up FaceTime before you can make and receive calls)

Set up FaceTime on iPhone (iOS15)

https://support.apple.com/en-au/guide/iphone/iphc4774d8d8/15.0/ios/15.0

Then try to make a FaceTime call

(If you wish: you can open Contacts and add people from there)

Make and receive FaceTime calls on iPhone

https://support.apple.com/en-au/guide/iphone/iph7801d5771/15.0/ios/15.0

Hope this works for you !