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This paper examines the price response of wireless carriers to the introduction of number portability in the U . S . I find that wireless prices decreased in response to number portability, but not uniformly across plans. Average prices for the plans with the fewest minutes decreased by only $0.19/month (0.97%), but average prices for medium and high‐volume plans decreased by $3.64/month (4.84%) and $10.29/month (6.81%), respectively. The results suggest that higher‐volume users in the wireless market benefited more from the policy‐induced reduction in switching costs.
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Minjung Park (2011) studied this question.
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