Samsung Galaxy S6 Edge: How to Use Reading Mode in Internet App in Android 5.1.1 Lollipop

When you find a nice post/article on a webpage while browsing with the Internet app in your Samsung Galaxy S6 Edge and want to read it conveniently without you have to be disturbed with the extra things in the webpage, e.g., advertisement, the webpage header, widgets, etc., you can use the reading mode feature in this app so those extra things will be eliminated and you can focus on what you want