After more than 100 years of the release of the world's first commercial movie screening, from black and white films, and silent movies to color films with advanced technologies, a 9:16 vertical frame has become the standard frame for movies.
Many years ago, senior and junior high schools prohibited students from using smartphones. Notwithstanding, for two recent years, schools have allowed students to use the device with orientation toward right use of smartphone and social network of students themselves.
