Verizon as part of a conference call late Wednesday altered its plans for its 4G cellular network. Initially slated for early 2010, the Long Term Evolution (LTE) network is now said by wireless chief Lowell McAdam to be fully commercial for the second half of that year in 20 to 30 markets. Although he doesn'tsay whether there would be any changes to the late 2009 test rollout, McAdam explains th