Do you find Android smartphones too complicated to operate? Microsoft CEO Steve Ballmer agrees. According to him, people need to be computer scientists to use an Android phone properly. 

Speaking on the occasion of the annual Web 2.0 Summit in San Francisco, Ballmer criticized smartphones running on Google's Android mobile phones for being too complicated.

You don't need to be a computer scientist to use a Windows phone, and you do to use an Android phone. It is hard for me to be excited about the Android phones, The Telegraph quoted Ballmer as saying.

The Microsoft CEO, however, was less dismissive of his major rival in the mobile phone industry, Apple. Apple is a good competitor, but a different one, he said. Ballmer also praised Apple's Siri, the much talked-about feature incorporated in the iPhone 4S.

According to Ballmer, Windows smartphones are better than Apple iPhones as they are more focused toward the users' needs.

Both are going to feel very good in your hand and both going to look very beautiful physically ... but when you grab a Windows phone and use it ... your information is front and center ... and you don't have to scroll through seas of icons and blah blah blah, he said.

Ballmer also said Microsoft Live Search, formerly called Bing, has taken almost 15 percent of the search engine market. Google still dominates with a 65 percent search share.

According to comScore, Google's share in the search engine market surged to 65.3 percent in September (up from 64.8 percent in August). Yahoo's share slipped to 15.5 percent for the same period (down from 16.3 percent in August). On the other hand, Bing remained at 14.7 percent.