Hide Your Account. By default, your
phone number is hidden to everyone but
your contacts.
The only way for a user to see your profile is to know your
phone number,
username, or if they are in a
group chat with you.
In your
Privacy Settings, you can make your phone number visible to
Nobody, which opens an extra setting:
Who Can Find Me By My Number?By setting
Who Can Find Me to
My Contacts, if anyone other than your contacts searches for your phone number, it will appear as if your account
does not exist.