Smartphones are one of the wonders of the modern world, and many of us cannot imagine life without them. They bring the world to our fingertips, make it possible to work from anywhere and have almost eliminated need for desk phones.
When you track the making of the smartphone and similar advanced technology, you end up at the semiconductor. Reading Chip War, a book by Chris Miller on how the semiconductor came to play a critical role in modern life, one can see why he argues that microchips are the new oil.