Do you want to receive a sms notification when a new video is uploaded in a Youtube Channel? If the answer is yes than YouNotify is what you need http://gcdc2013-younotify.appspot.com

YouNotify is a web application that allows YouTube users to receive sms : 1- When a new video is uploaded in a channel they subscribed. 2-Each week, it send to users the link of the video that concerning a topic that interests them which is treading on YouTube The users can then watch those videos via his watch later playlist.

YouNotify requires the use of Google Calendar Free SMS so you have to configure it to send SMS. If you don't know how to configure your calendar check this tutorial http://gcdc2013-younotify.appspot.com/tutorial .