Despite a great deal of information, people still find it hard to imagine how 5G will benefit their lives or the world at large. Some clues can be traced back to 2012, before the commer-cialization of 4G. Based on reports at the time, people knew 4G would provide smoother videos on smartphones, but they couldn't possibly predict the boom of the short video industry. They realized that 4G would make mobile payments easier, but the ideal method at the time was through credit cards, and no one knew a Quick Response code would soon replace cash payment, revolutionizing the field. Other unpredicted results included the emergence of mobile e-commerce, food delivery services and ride-hailing platforms.