3. Samsung Galaxy S6

Shout out to Samsung for having a second device in this best display smartphone of 2015 list. They are really good at it, we have to emphasize! Before the Sony Xperia Z5 Premium and Samsung Galaxy Note 5 were launched, Samsung Galaxy S6 was the champion of highest display density, with 577 ppi. Specifically, it is equipped with a Quad HD display which is becoming a popular trend of the high-end phone category nowadays and the screen size is small (5.1 inches). As a result, Samsung Galaxy S6 can have 577 ppi and was obviously the winner of the PPI battle at its time.

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