As the importance of mobile telecommunication service increases, primary policy becomes how to fertilize competition and enhance efficiency in the mobile market. To achieve those goals, it is key to correctly assess the degree of market competition, and most importantly, to evaluate the...

We assess how the advent of smartphones affected consumer switching costs in the mobile communications market, using data from two surveys conducted in South Korea. A nested logit random utility model is employed to explain consumers' choice over service type and carrier, and to estimate...