Yahoo will create versions of its mobile Internet services to run on various phone platforms, including Google's phone software and the Apple iPhone, the company announced on Monday.

Yahoo announced a series of enhancements on Monday designed to make Yahoo Internet services more easily accessible for existing mobile phones.

The plan includes allowing outside companies to create mini-Web sites that can be featured on the pages of Yahoo, in a bid to expand the number of consumers using Yahoo as a starting point to the Web.

MTV and MySpace and eBay are among the companies creating such mini Web features, which are known as widgets, to run inside Yahoo Web pages.

Yahoo is ready to create versions of Yahoo Mobile Widgets to allow users to keep tabs on their favorite Web sites on phones running Apple, Google, Microsoft or Nokia-backed Symbian software, Yahoo said.

Mobile device manufacturers including LG Electronics and Motorola are collaborating to make Yahoo! Mobile Widgets widely available on multiple devices. ACCESS, a global provider of advanced mobile software technologies, is also in early discussions to support Yahoo!'s Mobile Widget platform.

In November, Google announced the Open Handset Alliance, a group of more than 30 partners ranging from component suppliers to handset makers to network operators. Several of these partners have said they expected to introduce phones based on the Google Android phone software by the middle of 2008.

Developers stand to make money from running advertising when users click on their widgets inside Yahoo. Yahoo will supply both brand advertising and Web search ads to developers. Widget creators also have the option of running other ads.