As part of the 2019 frequency allocation process for mobile communications, the Federal Network Agency required network providers to achieve a certain level of mobile network coverage for the population. Cooperation between different network providers was also permitted for the first time,...

We empirically assess the impact of the EU roaming regulation on mobile operators' average revenues per user (ARPU) and retail prices. Using a differences-in-difference approach, hedonic price regressions and detailed operator and plan-level data we find that the regulation decreased mobile...

We analyze the welfare effects of price discrimination by a monopolistic platform that mediates between two sides of a market. Discrimination is based on asymmetric costs on one side of the market and may be allowed on either or both sides. We show that unconstrained discrimination on both sides...

This paper investigates the impacts of the current roaming rules on domestic competition and welfare. We consider a model for two countries in which each country has two operators that compete in the retail market for access services and also in the wholesale market for roaming. We first derive...

How does mobile internet access affect the desire to emigrate and migration plans? To answer this question, we combine survey data on more than 600,000 individuals from 110 countries with data on worldwide 3G mobile internet rollout. We show that an increase in mobile internet access increases...