[hideinpockets]

I’m not quite sure what you mean by send/receive? But you don’t need a mobile number in order for someone to FaceTime you or send iMessages as they can do this to your email address (and obviously FaceTime audio too). But you wouldn’t be able to do things like a text message or a normal call, and you’d obviously need to be on internet as well for your email address to work.

Where is the send / receive option? Is it in settings?