Speaking with AllThingsD at yesterday’s Verizon iPhone press event, Apple’s senior vice president of Worldwide Product Marketing Phil Schiller made several comments about the development of the CDMA iPhone. “It was a lot of work,” Schiller said of the two-year process, which involved months of testing and more than 1,000 prototypes. Schiller also commented on the new model’s Personal Hotspot feature, saying, “A big…