Apple has been talking with Microsoft about using the company's Bing search engine as the default search option for the iPhone, displacing rival Google, according to a Bloomberg report, which cited two unnamed sources familiar with the matter. The talks are the latest sign of a rivalry between Apple and Google, which now actively compete in the mobile phone arena. Among the terms being discussed by Apple and Microsoft, according to the report, are what percentage of search-related advertising revenue Microsoft would share with Apple. Article