Yahoo unveiled its enhanced oneSearch software during CTIA 2008, which lets people surf the Internet by speaking into their mobile telephones.

“With Yahoo oneSearch 2.0, we are fundamentally changing the way consumers use the Internet on their mobile phones,” said Yahoo’s Connected Life division vice president Marco Boerries.

Yahoo has partnered with 29 mobile telephone service carriers, representing 600 million customers, since the first version of oneSearch launched in early 2007, according to Boerries.

The second-generation oneSearch software is free for download and installation to mobile telephones linked to the Internet.