Comcast (NASDAQ:CMCSA) has enhanced its X1 Remote iPhone app with voice control. Now, customers can use voice commands to access the X1 platform guide, change channels by network name, search for program titles, sports teams and actors, as well as browse various categories in the Xfinity On Demand menu.Voice control on the X1 Remote App is now available for iPhone users who subscribe to Xfinity TV on the X1 platform. Comcast is working on voice control for Android phones and traditional remote controls as well.