As the article’s author, Hassan Bawab, stated, the tips supplied are just the tip of the iceberg to make your website mobile-device-friendly. The iceberg huge!!! But you don’t have to sink like the Titanic. The main tip Mr. Bawab mentioned was in his concluding statements.
"… keep testing and changing your website according to what you learn from your analytics data."
Now if you don’t learn how to read your analytics data, you’re going down!!
If you use Google analytics for your sites you might find the link below useful. If not, I can’t help you. You’re on your own. I use Google Analytics for my sites. The bounce rate is very disappointing, but I’ll persevere!