This article is a philosophical reflection on the essence and significance of technology, based on “Being and Time” by Martin Heidegger. In addition to being a theoretical critical analysis, this paper is also the author’s response to the impact of scientific and technological developments, which have had positive and negative effects on both human existence and human nature. Humans, as subjects of technology in the phenomenon of mobile phone usage, have recently become objects of exploitation in the marketing of mobile phone products. The mobile phone used to be merely a product of technology which originally served as a communication medium. Nowadays, it has become a reflection of people’s lifestyles and a manifestation of their way of life. In this case, the nature and meaning of mobile phones have shifted according to the role of humans as the subject of technology and the surroundings. In relation to the structure of science and technology, which positions humans as both subjects and objects, awareness of the human position as a subject of technology is crucial. When humans are the subject of technology, humans should be able to control the movement and direction of technological development so that it does not result in negative consequences. Similarly, when humans are objects of technology, they must be able to safeguard themselves so that they are not exploited and used to market technological products.