Program Participant

Program Participant

Sobee Shinohara

Visiting Researcher, Center for Advanced Science and Technology, University of Tokyo, Manager, KDDI and Director, KDDI Research Institute

Sobee Shinohara has been working on telecommunications' policy and regulation since joining KDDI in 1996. He is also in charge of research on telecommunications policy issues in recent years for KDDI Research Institute.

Prior to joining KDDI group, he served in the Ministry of Posts and Telecommunications (currently Ministry of Internal Affairs and Communications). He received his B.E. from Tohoku University in 1988, M.E. from Graduate School of Tohoku University in 1990, Ph.D. from Graduate School of Applied Informatics, University of Hyogo in 2012, and Ph.D. from University of Tokyo in 2016.

He specialized in the research on telecommunications policy, especially, the analysis of the fixed and mobile broadband adoption from the viewpoint of economics and technology.

You can find Sobee Shinohara in:

Research Workshop: ICT for Development
Sunday, 15 January 2017


Analysis of the Factors of Mobile Broadband Adoption in OECD 34 All Member Countries and its Implication to Emerging Markets


Paper Slides


The purpose of this paper is to analyze factors promoting mobile broadband adoption in OECD 34 all member countries and its implication to emerging markets.

Promoting rapid nationwide adoption of broadband services becomes an important national agenda for many countries. The U.S., for example, announced a National Broadband Plan which aims at providing 100 million households with access to 100 Mbps broadband by 2020. These national plans aim to deploy fixed connection via optical fiber network. Up to date, the development of mobile broadband has been proceeding rapidly and its access speed amounts to 150Mbps for the latest 4G (LTE), which is the same as fixed broadband. In these circumstances, mobile broadband, consisting of 3G and 4G, expected to play more important role due to their wider coverage areas with relatively low cost.

In emerging markets, such as China and Indonesia, which have great number of peoples and low adoption ratio of mobile broadband need the best way.

Previous studies
Previous studies on mobile adoption include the followings: (i) Lee [2013] analyzed consumer’s demand by a questionnaire survey in U.S., revealed that friends and financial burden affected smartphone adoption in college student as early adopters; and (ii) Akematsu et al. [2012] empirically analyzed the factors of 3G mobile adoption by using panel data in Japan, identifying the launch of the iPhone 3G, FeliCa, data roaming, and full music downloads as factors.

Methodology and Results
This paper empirically analyses the factors which promote mobile broadband adoption by panel data analysis in OECD 34 all member countries. The estimation term is from 2000 to 2012.

By using the instrumental variables method, the result obtained was summarized as follows: (i) Launches of smartphones both of Android and iPhone are positively significant.; (ii) HHI which denotes reverse proxy of competition among mobile carriers is negatively significant; (iii) FTTH adoption ratio is positively significant.

The followings are some remarks on the results. The launches of smartphones promote mobile broadband. The result of HHI indicates not only competition among mobile carriers drives mobile broadband adoption but also the number of mobile broadband carriers is large and the market shares are not concentrated. And the positive coefficient of FTTH indicates that mobile and fixed broadband is complementary to each other.

This analysis provides an important basis for national broadband policy for both of developed and emerging markets.

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