User profile for user: sterling r sterling r User level: Community Specialist Mar 17, 2018 3:19 PM in response to thao205 Hello thao205, Thank you for using Apple Support Communities! I understand from your post that you have not been able to activate iMessage with your phone number but can use it with your Apple ID. The following article has steps which may help resolve this type of issue: If you get an error when trying to activate iMessage or FaceTime - Apple Support Best Regards. Show more Less Reply Link