Japanese Cellphone Market
- Docomo, KDDI au and Softbank Mobile
- Sales share 2008: Docomo 51%, KDDI 31%, Softbank 18%
- Usage share 2009(by Kakaku.com traffic): Docomo 45%, KDDI 37%, Softbank 18%
http://itpro.nikkeibp.co.jp/article/COLUMN/20080717/311074/
http://kakaku.com/trendnews/weekly/articles/0906/25.html