NTT DoCoMo Inc. President and Chief Exective Officer Ryuji Yamada speaks during an interview with Reuters at the company headquaters in Tokyo July 9, 2009.

NTT DoCoMo Inc. President and Chief Exective Officer Ryuji Yamada speaks during an interview with Reuters at the company headquarters in Tokyo July 9, 2009.

NTT DoCoMo Inc. President and Chief Exective Officer Ryuji Yamada speaks during an interview with Reuters at the company headquaters in Tokyo July 9, 2009.

NTT DoCoMo Inc. President and Chief Exective Officer Ryuji Yamada speaks during an interview with Reuters at the company headquaters in Tokyo July 9, 2009.

Getty Images 6 months ago

NTT DoCoMo President Ryuji Yamada holds Pro series "HT-03A" beside a display of 2009 summer models during its press preview in Tokyo on May 19, 2009.

Getty Images 6 months ago

NTT DoCoMo President Ryuji Yamada holds Pro series "HT-03A" (L) and "T-01A" (R) beside a display of 2009 summer models during its press preview in Tokyo on May 19, 2009.

Getty Images 6 months ago

The shadow of NTT DoCoMo President Ryuji Yamada reflects on the screen as he introduces the company's new mobile phone "HT-03A" using Android operating system during its press preview in Tokyo on May 19, 2009.

Getty Images 6 months ago

NTT DoCoMo President Ryuji Yamada explains the company's new Pro series "HT-03A" during its press preview in Tokyo on May 19, 2009. NTT DoCoMo announced its lineup of 18 new handsets in their four main series, "Style", "Prime", "Smart" and "Pro", for launch on or after May 22.

Getty Images 6 months ago

NTT DoCoMo President Ryuji Yamada introduces the company's 2009 summer mobile phone models during its press preview in Tokyo on May 19, 2009. NTT DoCoMo announced its lineup of 18 new handsets in their four main series, "Style", "Prime", "Smart" and "Pro", for launch on or after May 22.

Getty Images 6 months ago

NTT DoCoMo President Ryuji Yamada introduces the company's 2009 summer mobile phone models during its press preview in Tokyo on May 19, 2009. NTT DoCoMo announced its lineup of 18 new handsets in their four main series, "Style", "Prime", "Smart" and "Pro", for launch on or after May 22.

Getty Images 3 weeks ago

A model displays NTT DoCoMo's latest separate-style F-04B mobile phone during the company's new 2009 Winter/Spring models press preview in Tokyo on November 10, 2009. NTT DoCoMo is presenting 20 new models for the upcoming season.

Getty Images 3 weeks ago

A model displays NTT DoCoMo's latest separate-style F-04B mobile phone during the company's new 2009 Winter/Spring models press preview in Tokyo on November 10, 2009. NTT DoCoMo is presenting 20 new models for the upcoming season.

Getty Images 3 weeks ago

NTT DoCoMo President Ryuji Yamada shows off the latest separate-style F-04B mobile phone during the company's new 2009 Winter/Spring models press preview in Tokyo on November 10, 2009. NTT DoCoMo is presenting 20 new models for the upcoming season.

AP Photo 4 months ago

A man comes out of a shop of NTT DoCoMo Inc. , in Tokyo, Japan, Thursday, July 30, 2009.

AP Photo 4 months ago

A woman comes out of a shop of NTT DoCoMo Inc. , shop in Tokyo, Japan, Thursday, July 30, 2009.

Getty Images 6 months ago

Models show off some of NTT DoCoMo's 2009 summer models of the mobile phones during its press preview in Tokyo on May 19, 2009. NTT DoCoMo announced its lineup of 18 new handsets in their four main series, "Style", "Prime", "Smart" and "Pro", for launch on or after May 22.

People look at Japan's top mobile phone operator NTT DoCoMo handsets displayed at an electronics shop in Tokyo January 30, 2009.

A woman, reflected on a mirror, looks at Japan's top mobile phone operator NTT DoCoMo handsets displayed at an electronics shop in Tokyo January 30, 2009.