Samsung is popular in selling Android-based smartphones. At least that’s what the notion is in North America. But its own proprietary mobile OS a.k.a. Bada is also enjoying its own success, especially in Asia. The Korean giant expects to sell at least 5 million Bada-powered phones by the end of 2010. That’s not all. The company also estimates the number of downloaded Bada-apps to be around 50 million before the end of the year.