Caller Id

You can have multiple Caller IDs for FaceTime on your device with FaceTime.

This can be achieved by changing the Caller ID as shown in the GIF below. (Made on iPhone 6 iOS 12.4.5)

Change the Caller ID before making a FaceTime call. Enjoy privacy...

Caller ID is same as Reachable At IDs

In Order to add more Reachable At IDs (Refer to Picture at the bottom), Log into https://appleid.apple.com with your Apple ID credentials. Under Account Section Click Edit and Add as many as Reachable At Phone Number or Email IDs

GIF for changing Caller ID...

Add more Reachable At in Apple ID

For voice calls: In many countries this is enabled by your carrier only if you are a VIP.

Contact your carrier.

1. Is this your corporate iPhone? Then please contact the system administrator of your corporate
2. If it is your personal device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
   1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
   2. Or please contact the system administrator of the organisation who provided the profile to you