I have got two questions.
- Please roll up the window.[/i]
I think roll up is used when you turn a rotating handle to slide the car window up. Nowadays, you can open/close a car window by pushing a button. Do we still say “roll up/down the window” in this case?
2) He hung up his phone before I finished speaking.
Would you use hang up even in the case of mobile phones? If not, what is the natural expression in the above context?