Agreed. HKenneth may be a self-proclaimed mathmetician, but doesn't have much sense. AT&T now gives $150 bill credit when you add a NEXT line to your plan. I doubt his CC company is giving him $150.
Somehow, he thinks NEXT is supposed to be cheaper than buying outright, but that is not what NEXT is. It's the same price as buying outright, plus you can trade in early and get a new phone. At no time are you paying more than buying outright. It's just a zero interest payment plan. (and now, with $150 bill credit).
Also, NEXT is NO CONTRACT, also. He's just completely wrong on all counts.
Is the $150 credit for a additional new Next line or also for using Next to buy a phone for an existing line?
People are talking about selling their phone vs turning it in. You can pay off the Next phone anytime during the period it is financed for and sell it.