In this chapter, we have discussed the history of mobiles and why mobile web optimization is necessary. Also, we have discussed the three main pillars that are important in the mobile world, and you have seen how 3G and 4G data connections can drain the user's battery. After this, we went through the major browsers and popular OSs in the market, and we have discussed negatives and positives in those.
In the next chapter, we will take a look at the essential components in mobile web optimization. The chapter will help you learn about the differences between mobile sites and responsive websites, and you will also learn some of the image optimization tools and more.