We are about to roll out Managed IDs to our teachers and in testing it, it requires a phone number to call/text for verification. Does anyone know if that can be disabled or another method used as I'm sure we will get push back for having to associate their cell phone?
Be aware that for now, Managed Apple ID don't support VPP enrollment (at least on the last setup I've done, we wasn't able to do it).
Teacher Apple ID (and other adults) are required to provide cellphone for security reasons. Their Apple ID can be used to reset password for students Apple ID.
Bad things can happen if a student guess a teacher password.