I had set my smartphone to the English version a few years ago, so I was not familiar with the interface then, once upon a time, I was messing with my smartphone in the "Settings", I found a switch called "eBook mode", I was curious to turn it on, and then my smartphone suddenly went into the so-called "eBook" mode, like a small Kindle device.

It's nice, you know, it has no other colors more than white, grey and black. First of all, it saves a lot of battery power. Secondly, if you read for a long time, it won't hurt your eyes more than the colorful screen.

The most important point is that a colorless screen will not attract you anymore, it will reduce the opportunities to open it or be immersed in scrolling it all day and all night.