The following happens in various applications such as more than one type of web browser and Adobe's PDF reader. I'm scrolling through text at a comfortable zoom level, and then suddenly, I touch the screen the wrong way, and it zooms way out. How can we prevent this UI behavior?
This feature is known as double-tap zoom. In the stock browser, it can't be disabled, but it can be adjusted in
Settings -> Accessibility -> Zoom on double-tap. According to this answer , Dolphin Browser HD supports disabling it.