Activation of iMessage and FaceTime
Can't use iMessage and FaceTime on my iPhone it showing waiting for activation and till now they have not activate it
iPhone 11, iOS 16
It can take up to 24 hours to activate your facetime and iMessage
It might take up to 24 hours for your carrier to verify your phone number with Apple. Contact your carrier to make sure that you can send and receive SMS messages and wait up to 24 hours after you try the troubleshooting steps above.
If iMessage is on and a spinning gear appears next to your phone number, your device automatically attempts to verify your phone number. There is no need to repeatedly turn iMessage off and on.
See this link for further reference
If you can’t turn on or sign in to iMessage or FaceTime on your iPhone - Apple Support