Multiple studies show that more people surf the internet via their mobiles than from a desktop PC. According to Stone Temple research from 2017:
- The percentage of visitors that use their mobile devices to surf the internet increased from 57% to 63%.
- The time spent on the Internet via mobile devices also increased from 40% to 49%.
In 2019 (as well as in 2018), more people will switch to mobile devices to access the Internet. Therefore, optimizing a website for mobile users is the next goal of all web designers, developers, and other related personalities.
Source: templatemonster
On https://search.google.com/test/mobile-friendly
you can easily check if your website meets the requirements.