

Right, in English you have to rephrase the sentence because the pronoun you need doesn’t exist. There’s just a pronoun for “male person” not one for “subject” or “object” of the sentence.
That’s why I replied with it to a “what word would you make up?” Question, because that’s what I would bring into English
Also, for what it’s worth, it feels a lot more natural with mixed genders here to me:
Steve gave Christina his phone