Given that Next is effectively a 0% interest financing plan with no prepayment penalties, it's easy to compare the market rate for your used device vs. the amou

Given that Next is effectively a 0% interest financing plan with no prepayment penalties, it's easy to compare the market rate for your used device vs. the amount of remaining payments you still owe and make the best choice from there. (That "best choice" could be driven by financial reasons, or by convenience.)