Since Digicel services began to operate in remote areas of Papua New Guinea in mid-2007, enthusiasm for mobile telecommunication devices has become a pan-New Guinean phenomenon. During our last fieldwork period, between December 2010 and December 2011, no mobile phone network existed among the Karawari people in the East Sepik Province of Papua New Guinea. However, their expectations were high and some individuals had already purchased mobile phones, which they used as torches, radios, and cameras. In Ambonwari village, people were convinced that Digicel would soon build its tower on their land and enable them to ring both the living and the dead. The dead had already interfered with calls and some people were suspected of possessing phone numbers of their deceased relatives. In our article we explore the relationship between mobile phones, the increasing fascination with phone numbers, and the ways in which the Ambonwari perceive, interpret, and engage with the world.Keywords: mobile phone, new technologies, spirits of the dead, religious movements, Karawari people, Sepik, Papua New Guinea Different theories surrounding the impact of technology on societies and cultures have emerged over time. From a substantive perspective new technology is a domineering and irresistible force in its own right. People have no control over it; they have to keep up with new techniques and these need to be efficient. Technology also serves to explain everything that is taking place in the world, be it society, politics, economy, science or art. From this point of view, technology is not neutral but changes cultures and shapes societies and values (Borgmann 1984: 9; Verbeek 2005: 136). From an instrumentalist perspective, however, technology is value-neutral. Human beings have been perceived as tool-makers since the beginning and technology, regardless of its complexity, is simply an instrument that humans use to accomplish certain tasks. Both rationalism and liberal democracy hold to this perspective, leaving values to develop in a private sphere (Borgmann 1984: 10; Verbeek 2005: 136). Recently a new post-phenomenological perspective has criticised both of these approaches, since they separate technology from human beings, their histories and their cultures. Don Ihde, a philosopher with a keen interest in the history of technology and anthropology, has tried to develop a positive phenomenological framework and phenomenologically-oriented hermeneutics for understanding human-technology relations (Ihde