“AT&T’s offering some of its customers a $200 early iPhone upgrade discount ahead of their two-year contract expiration date,” Xavier Lanier reports fro Gotta Be Mobile. “That may sound generous, but it actually may have unintended consequences, opening the door for loyal AT&T customers to switch to rival Verizon.”

“The problem with AT&T’s early iPhone upgrade plan is that the $200 subsidy is less than half the $450 subsidy that Verizon and Sprint will offer these same customers,” Lanier reports. “Of course, AT&T customers who bought subsidized iPhone 4S’ will need to pay an early termination fee, which amounts to $325 minus $10 for each month of service. Those who purchased the iPhone 4S last October would need to pay AT&T an early termination fee of just $215.”

Lanier reports, “Do the math and you’ll see that AT&T customers would actually come out $35 ahead by switching to Verizon rather than sticking with AT&T.”

Much more in the full article here.

[Thanks to MacDailyNews Reader “Arline M.” for the heads up.]