You may have not heard much about Oppo, and that's because it's a Chinese company, but it has already released some very interesting smartphones, like the Oppo Finder, which is currently the thinnest smartphone on the market, measuring only 6.65 mm in thickness, and the Oppo Find5 X990, called the thinnest quad core smartphone.
Oppo Find 5
But soon it's about to have an even more interesting device on the market – the Oppo Find 5, which will be a 5-inch phone with a 1080p screen and 441 PPI. This may very well be the first phone to ship with this resolution, and the first phone with such a crazy high pixel density.
As you can see below, the closer you get to 500-600 PPI, the closer you get to achieving paper-like LCD's. The ideal pixel density may be 1200 PPI for really crisp photographic papers, but I figure we have at least a decade until we'll have screens or processors that can handle that (there's always e-ink until then).
The Oppo Find 5 one will certainly be one of the devices pushing us towards that future, with its 441 PPI screen. It has more than a great screen though. It also has a quad core S4 Pro processor, which sounds like a perfect match for a resolution this high, and it will arrive with Jelly Bean on board.