Consider we have url : https://localhost:60035/wps/portal/test?PhoneId=35102
Import com.ibm.ws.portletcontainer.core.impl.RenderRequestImpl
Write down code in Portlet.
public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException {
RenderRequestImpl renderRequestImpl = (RenderRequestImpl)request;
String phoneId = renderRequestImpl.getRequest().getParameter("PhoneId");
super.doView(request, response);
}