How to register number for iMessage?

Hi JesWannaNo,

to use your number for iMessage you will have to go to Settings->Messages and turn on iMessage.

To learn a little more about iMessage you can go to this site:

https://support.apple.com/explore/messages

However if you want to add a number that you can use for iMessage on your devices you will have to go to Settings

->(your Apple ID card at the top)->Name, Phone Numbers, Email and press „Edit“ next to „Contactable At“ and add another number.

I want to add contact phone number to iPad message. They are on iPhone but not ipad