Gradual Changes to Come for Sprint, Nextel Cell phone shoppers looking for new deals and features didn't find them Thursday, a day after the phone companies announced a merger that they promised would shake up the wireless business. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2" color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/b&gt;&lt;/font&gt;