The correct answer to this open question is the following.
Nothing is so necessary as a smartphone'. Make this sentence comparative.
Today, a smartphone is more important than an office because on your device you have all that you need to do business.
In this modern world, the use of mobile devices such as a smartphone is needed for the many tools to conduct business in a professional way. Through the many apps and other resources, today, any professional can make presentations, show data to support arguments, have video meetings, and connect with different parts of the country or the world.
