Digital Butler (Concept) for The Extremely Lazy

How long do you think it will take for something as simple as a bell or ringer to become obsolete, being replaced by this Digital Butler concept? Hopefully not too soon, as we have a soft spot for classics in some things, as the Digital Butler concept still misses out on the human touch despite being able to attend to your queries with ruthless efficiency. For instance, it will function on advanced 4G networks (it is in the future, remember?) with GPS to provide you with details to all the most happening spots in town, and is easy to navigate thanks to a circular touch screen display. Other features include an integrated accelerometer, a PDA phone function, a built-in LED projector and full-time network connection to VIP services. What is this powered by, a mini nuclear reactor?