C# 如何从facebook登录API获取手机号码？

这是我的代码，我正试图使用它从facebook获取手机号码，但我无法获取手机号码

var identity = await AuthenticationManager.GetExternalIdentityAsync(DefaultAuthenticationTypes.ExternalCookie);
var access_token = identity.FindFirstValue("fb_access_token");
var fb = new FacebookClient(access_token);
dynamic myInfo = fb.Get("/me?fields=email,name,gender"); // specify the email field
Email = myInfo.email;
Name = myInfo.name;
string s = myInfo.gender;
Gender = char.ToUpper(s[0]) + s.Substring(1);

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据我所知，您无法获取手机号码。查找以下可通过API获取的字段列表