Cell phone is one of the most popular and portable of almost all the modern electronic gadgets used in the modern world, especially by young men and women. A cell phone nowadays has become a multi-purpose household electronic device since its utility has been highly increasing day by day, for speaking and chatting, for sending and receiving messages, as a camera, as a storehouse of a number of valuable information, as a music player and recorder (voice recorder too), as an FM radio, as a calculator, as a modem for internet connection and internet surfing, as a medium for advertisement, even as a medium for conducting bank transactions, as a mini-projector and so on. Recently it has become the latest form of entertainment, in providing novels for readers through its screen which has been called by various names such as cell phone novel, mobile phone novel, text messaging novel, m-novel, m-lit, cell literature, phone novel, and even as SMS novel.
(source: Introduction of Cell Phone Novel A New Genre of Literature)