In this week’s Businessweek article about  Mobile Search, they mentionned a survey from M:Metrics that estimated the number of people using Google Mobile in the US to be 4.75 Million in the fourth quarter of 2006, while Yahoo! has around 3.6 million.

The article also cites Bryan Lent, CEO of the growing mobile search company Medio Systems, claiming that they have more users in the US than Google. It might be hard to believe but I think this is absolutely possible.

In the US, Medio is powering Verizon and T-Mobile. Verizon has 59.1 million users, and T-Mobile has 25 million, as of december 2006. That represents a potential user base of 84.1 million for Medio. If 10% of both mobile operators’s users (and I think I’m being pessimistic with this percentage) use search on their portal, that makes 8.41 million users for Medio in the US, that is, twice more users than Google Mobile.