İphone trade-in
I want to trade in my current iphoneX with new iphoneX or another model. I stay in Turkey. But i bought my iphoneX from USA several years ago. One of my friend will go to Chicago in couple of days and i want to give my iphoneX to him to trade-in with new one. I have 2 questions that if he can trade in my iphoneX without me and does he need any reservation at apple store for trade in support?
iPhone XS