Electronics have become a major help in the last hundred years. Everything can be done without straining your brain. It really improves your way of living because you can save time in your daily routine. These gadgets are in movies to advertise something subliminally.
For example, the lead character might be using an iPhone in the scene. The camera might show for a brief second of a messy room, with all types of popular electronics in the background. Movie producers have used this technique for quite some time, to advertise and market a specific brand.
Most people will not notice these hidden products because they are focused on watching the movie. Watch a movie an see how many electronics you can spot in the background. I have tested this already, and I was surprised at the results. I found on numerous occasions there were some type of electronics being advertised.