What are you suppose to say...?

Question

This is her?

or

This is she?

Answer 1

Presuming they ask for you on the phone...

"Speaking!"

Answer 2

this is she.

it's kind of old fashioned phrasing though.

Answer 3

'This is she' is correct, but when good grammar sounds old-fashioned sometimes it's better to just use a different phrase. "You're speaking with her" works well if you've answered the phone, or "she is!" if someone recognizes a person you've introduced them to from a story you've told earlier.

Answer 4

This is she. I always feel kinda dorky when I have to say it though. Like when someone from a business calls and asks for me by name, I say "this is she" because I know it's correct grammar, but I still feel silly. I think a lot of people say "this is her."