Apple ID changing process

ok, but will this phone no I’d will be ok for all task on iPhone.Since I’m recently shifted from android to iPhone I don’t have much idea.

If it’s ok then why I am not able to do any call on FaceTime??why i can’t contact on FaceTime??

Yes,Iam from India.. my friend tried doing and his call were going his using iPhoneSe and same with mobile no as Apple ID.

As per support my setting are showing as it is mob no Apple ID and email I’d but I can’t call anyone. Please help.

Yes ,setting checked .

caller I’d selected as mobile no

face-time >mobile no and email both selected.

but can’t call others