InformationWeek posted a story that Verizon Wireless would be happier to sell Windows Phone devices if they had Long Term Evolution 4G.

Microsoft's Windows Phone platform lacks support for any type of 4G wireless broadband. It doesn't support WiMax or Long Term Evolution, which are the two 4G technologies being deployed in the United States by major network operators AT&T, Sprint, and Verizon Wireless.
Verizon Wireless recently indicated that Windows Phone's failure to hop on the 4G bandwagon is preventing the nation's number-one carrier from backing Microsoft's mobile platform more fully.

  Windows Phone Needs LTE To Succeed, Says Verizon