According to many, Samsung Galaxy S II is the best mainstream Android phone currently available on the market. It appears the company has a hit on their hands as Electronista reports they sold an astounding three million pre-orders around the world as of Sunday night. The figure puts Samsung on track to beat its own goal of ten million Galaxy S II units in 2011. The dual-core phone sold about 120,000 units in the first few days of availability in South Korea. The Galaxy S II features a monstrous 4.3-inch display with the latest Super AMOLED Plus display technology.