Samsung Galaxy Note II has already been a successful smartphone, since it has already sold 3 million units in just a month from its release. In fact, Samsung announced that it took Galaxy Note II just 37 days to reach the 3 million milestone, which is obviously a success for the brand. However, Apple's fans might say that iPhone 5 sold 5 million units in just 2 days, which raises the competition level even more between the two companies.