By Eric Auchard

LAS VEGAS (Reuters) - Yahoo Inc’s Jerry Yang will seek on Monday to demonstrate in his first major speech since taking over as chief executive in June the inroads the company is making putting Web services on mobile phones…

In a speech at the Consumer Electronics Show, an industry agenda-setting conference taking place in Las Vegas this week, the Yahoo co-founder will highlight a series of enhancements the company is making to its Internet services to optimize them to run on hundreds of millions of existing mobile phones.

Marco Boerries, the executive in charge of Yahoo’s division supplying Web services for phones, TVs and other devices beyond PCs, told Reuters in an interview ahead of Yang’s speech that Yahoo wants to play a big role in these new markets while staying true to its roots as an Internet services pioneer.

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