Google provides the most coverage of the categories, although typically not the best. They have some real improvement to be made here. Yahoo! seems to do the best for coverage and quality. Microsoft is lacking on a few fronts but their find a business (which is probably the best feature of a mobile service period) feature was clearly the best. Google services are slow, so are Yahoo!. Microsoft is the fastest.
Rating scale 0-3, 0 if they did not offer the service.
I’m a gmail guy so I find myself in Google’s Gmail Mobile most of the time, Google understands mail & map applications. Yahoo! has the leg up on Google for the other areas besides Find Business. Microsoft does a really nice job with their category/movies/find a business, it has the most potential. But still the winner goes to Google Services.