Christian Koboldt

Learn More
This paper examines the consequences of introducing mobile number portabil-ity (MNP). We show that if the sole effect of introducing MNP is the abolishment of switching costs, MNP unambiguously benefits mobile customers. However, if MNP also causes consumer ignorance, as telephone numbers no longer identify networks, mobile operators will increase(More)
International roaming – the ability to use one's mobile phone on foreign networks – has contributed to the success of GSM services in Europe, but has also been a constant concern for competition authorities. Whilst competition for subscribers has driven down the cost of owning and using mobile phones, roaming charges have remained high, and have been the(More)
This paper examines the consequences of introducing mobile number porta-bility (MNP). As MNP allows consumers to keep their telephone number when switching providers, it reduces consumers' switching costs. However, MNP may also cause consumer ignorance if telephone numbers no longer identify networks. As a result, while fostering competition for mobile(More)
Using simple game theory, this paper analyzes the working properties of the different procedures laid down in the comitology decision, i.e., the European Council's decision on procedures for the exercise of implementing powers conferred on the Commission. Furthermore, it addresses the question of how the balance of power is determined by this decision.
  • 1