Samsung is expected to unveil its Galaxy S5 next month. However, so far few details are available about the device. Seems, not any more. According to data collected by popular benchmark app GFXBench, an upcoming Samsung device codenamed SM-G900S will have 2K or 2560x1440p resolution. This is the highest resolution for any smartphone, as the current maximum is 1920x1080p. It is said that Samsung's upcoming Galaxy S5 smartphone will have a 5.2-inch display. This will mean pixel density of 560ppi, the highest in any smartphone available in the market. Currently, HTC One boasts of highest pixel density among smartphones - 469ppi. However, Galaxy S5 will not be the first 2K phone in the market. Chinese manufacturer Vivo is slated to launch the world's first smartphone with 2K resolution. The successor of HTC is also rumoured to have 2K resolution screen and hit the market in February next year.