Abstract
Mobile number portability (MNP), which allows consumers to retain their mobile numbers when switching service providers, is expected to promote competition by lowering switching costs. This paper estimates switching costs and switching costs reduction from the MNP policy in Thailand using the mixed logit model with preference heterogeneity on a nationwide survey of mobile telecommunications service usages. The estimation result shows that the MNP policy reduces switching costs by 37% on average and that this benefit is heterogeneous across consumers. The considerable and persistent switching costs call for additional measures to facilitate switching.
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