The following shows 2014 market share of cellphone carriers in Japan which was calculated by Ministry of Internal Affairs and Communications. The number of the total users in 2014 was 149.98 million.
| Carrier | Market share (%) |
| NTT docomo | 44.4 |
| au | 29.0 |
| Softbank | 26.6 |
The source of the market share is Nikkei Sangyo Shimbun newspaper, the article on 2015 July 27th.
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