Smartphones, ipads, and other mobile devices used to watch videos are sometimes referred to as

The correct answer is fourth screens

Explanation:

We live in the era of the fourth screen, this refers to smart phones as well as other mobile devices such as iPods, iPads, electronic reading devices and other tablets:

"At the beginning of the last century there is the origin of the first screen, the cinema," the silver screen ", while television, the second screen, became popular in the sixties. The personal computer, the third one, began in 1975 with the Apple II, stabilized in 1981 with the IBM-PC and consolidated with the popularization of the Internet in 1995. Something similar happens with the fourth screen: it starts at the beginning of the 1990s and consolidated in 2002 with the spread of mobile broadband. These four screens, which initially worked alone, are converging on a single reticular platform without seams. Convergent because the devices have integrated functions. ” (Artopoulos, 2011).