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Publication Detailed Description
The complementarity between calls and messages in mobile telephony
Journal Title
Information Economics and Policy
Year (definitive publication)
2008
Language
English
Country
United States of America
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Abstract
This article estimates price elasticities of demand for mobile telephone calls and messages. We use panel data consisting of telephone bills to Portuguese mobile telephony consumers. In order to account for the unobserved individual heterogeneity and data censoring, we estimate a Tobit model for panel data with individual random effects. The demands for calls and messages are inelastic. Calls and messages are found to be complements.
Acknowledgements
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Keywords
Mobile telephony,Price elasticities,SMS,Complementarity
Fields of Science and Technology Classification
- Economics and Business - Social Sciences
