The U.S. Federal Trade Commission subpoenaed Apple as part of a Google antitrust inquiry says Bloomberg. The FTC asked Apple to hand over documents that detail its search agreement with Google. Google has been the default search engine for iOS since the iPhone launched in 2007. Rumors suggest Microsoft, in 2010, tried unsuccessfully to unseat Google from this position.
At the heart of this investigation is the assertion from Google's competitors that the search giant used its position to favor its own businesses in search results, increase advertisement rates for its competition, and control the mobile search market.