That's why you need a wing man. He holds the phone and wallet while you go live the missing chunks of your Campus/College life.
I'm assuming you are not in Campus/College.
Or you could just get your self a girlfriend. A sweet, lovely African woman. And practice zero grazing....
Can you manage that?
Oh, we were talking about iphone 6 plus...

Never count on making a good sale. Have the purchase price be so attractive that even a mediocre sale gives good returns.