Google is currently the most active player in the mobile search arena.
These are the offerings from them,
Some interesting information, from the faq’s
"Google automatically translates these pages by analysing the original HTML code and converting it to a mobile-ready format. To ensure that the highest quality and most useable web page is displayed on your mobile phone or device, Google may resize, adjust or convert images, text formatting and/or certain aspects of web page functionality.”
That means, your webpage may look different to mobile users.
Some inside stuff,
“XHTML (WAP 2.0) areWML (1.2) and iMode are different formats for mobile websites. XHTML is what most phones sold in the last couple years support, and will enable you to view images and text on your phone along with iMode. WML is an older format that doesn't enable you to view images.
With these formats, Google automatically translates regular Web pages into pages that your phone understands. But since these formats support different content, your Google Mobile experience will vary as follows:
With XHTML you can conduct both Google Web Search and Image Search.
With WML, you can only conduct Google Web Search.”
So look into your phone manual to find, whether it is mobile-search enabled.
This is interesting,
“No, you can't send cell phone search results to a friend.”