No, that is not idiomatic; … off the phone is.
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Huzaifa Asif I was on a call with my one of my friend. My brother all of a sudden got irked by me and hollered at me saying, "when will you get off the call?"Does it sound fine?I was on the phone with one of my friends. My brother was getting annoyed about it, and all of a sudden he hollered at me, "When are you going to get off the phone?"