Facebook test users with phone number instead of email

I've been trying to create a bunch of test users for my test application that will be mocking a case when user signed up to Facebook using his phone number (not his email).

Turns out that the tool to create test users (App -> roles -> test users) allows to create only users who have email and there's no way (AFAIK) to change the data without logging in to Facebook as this user and changing his account settings.

Is it not possible or am I missing something?

EDIT 1: I'm not actually able to add a phone number without verification

Unfortunately, there is no way to add testers with their phones. You can add your testers by their fbids or usernames.