This article contains some interesting info: according to the author as part of their agreement with the government over the leasing of their 700MHz Block C spectrum band, Verizon is required to allow carrier-unlocked phones on its network. "Right now, Verizon's LTE network already covers 250 million people, a landmark AT&T expects to reach at the end of 2013. And as we know, Verizon will also begin its VoLTE (voice over LTE) rollout some time before the end of 2013, which will almost certainly make it America's first VoLTE network of any substantial size. This puts Verizon on the fast track to begin phasing out its CDMA equipment, and become a full-on GSM carrier. An even more exciting implication? It's entirely possible you'll be able to start bringing your own phone to Verizon by early 2014. As part of its licensing agreement for the 700MHz Block C spectrum band, which is utilized as a major part of its LTE network, Verizon is required to allow carrier-unlocked phones on its network."