Can I sell a phone that money is still owed on it, will the person purchasing the phone be able to active and use it?

[AC Question]

Putting different phone on Edge plan acct using old SIM card/selling original Edge plan phone.

I have a 45 day old phone (A) on VZN Edge Plan. I hate phone - it drains battery too fast (I've tried every fix). I want to sell it and get a different phone (B) (I'll buy unlocked Verizon phone outright). I want to put my SIM card from phone (A) in new phone (B) and sell old (A) . I realize I'm obligated to continue the Edge plan for the 2 yrs, which I would do. Would I be able to sell phone (A) that is the one i got w/ Edge if phone (B) has my SIM card in it and I'm making the timely payments as agreed? - ie will whoever buys phone (A) be able to activate and use it? Does VZN care what phone I'm using as long as I'm making the monthly Edge payments? Thanks!