Japan's NTT DoCoMo will add three new search services for its mobile phone users, including Yahoo Japan, a unit of its rival Softbank, a company source, quoted by a Reuters report said.
DoCoMo, Japan's biggest wireless carrier, will offer new online search engines for its wireless Internet browsing service, which will expand its lineup to 13 search engines, the source said.
Yahoo Japan is the country's biggest portal.
Offering Internet search engine services on mobile phones may help operators lure customers to access more Web sites and spend on online shopping, the Reuters report said.
DoCoMo has said it would offer search technologies from 10 engines, including Google.