Talking on the phone in the library is rude.
Tina is looking for a book to read at her local library when her phone rings, she sees that it is her friend.
Tina wants to find out what her friend is calling about.
Tina does not answer the call, but rather she steps outside of the library to call her friend back.
Tina decides to answer her phone in the library aisle, since she doesn't see anyone else around.
Tina does not embarrass herself by making noise in the library and the librarian doesn't have to have an uncomfortable conversation with her about keeping the noise down.
The librarian has to come over and ask Tina to keep her voice down and Tina is embarrassed.