How Prepaid Billing in Italy Helped Shape the Global Diffusion of Mobile Phones.

Why was Italy the first country to introduce prepaid mobile phone billing services in 1996? What was the key to its success that led seventy-five telecommunications operators to introduce prepaid billing by 1998 and accelerated the mass adoption of mobile phones around the world? This article examines why prepaid was successful in light of national policies and sociocultural shifts. Along with SMS, handhelds, GSM, and the digitization of mobile communications, prepaid billing played a role in the rapid and immense spread of the mobile phone worldwide. As an innovative means of paying for mobile phone usage, prepaid represented a departure from operators' previous mobile phone payment methods. The article argues that by overlooking the contribution of this form of payment, telephone historians, the media, and business scholars have ignored this important driver of the success of mobile phones.

Ghettos and enclaves in the cross-place realm: mapping socially bounded spaces across cities.

Since the early Chicago School, urban researchers have used residential proximity to assess contacts within and between racial and ethnic groups. This approach is increasingly limited. Diverse groups use email, social networking sites, instant messaging and mobile phones to communicate across urban zones and distant cities. These practices enable mutual support among far-flung family members and co-ethnics as they engage with an array of institutions throughout their day. Through interviews and observations that include women and men of diverse occupations, races and national origins, the author explores how and why cross-place enclosures of sociality and resources develop. Rather than framing the residential area as the locus of racial/ethnic concentration, the author focuses on cross-place concentrations in the technologically mediated workspace. This study enhances theorization of the structural negotiations, interpersonal pressures and group preferences that produce separate lifeworlds in globalizing cities.