Microsoft Graph Explorer returning empty businessPhones for Users

Question

Is there a special permission necessary to read the businessPhones of a User?

Calling https://graph.microsoft.com/v1.0/users/myuseridaud@mydomain.com/ works just fine from when I use the Microsoft Graph Nuget package in my own code, but using the Graph Explorer, I always get an empty array.

Looking at the two requests in fiddler, the only difference I see is in headers (and my code uses authentication by AppId/AppSecret since login/pass authentication is not supported for applications).

What would make the Graph Explorer exclude this value?

Answer 1

For graph explorer, you only need User.Read.All (Delegated)permission. Please check if the user has set businessPhones.

update: