The Chinese manufacturer Huawei took position on the Quad HD screens, Richard Yu, CEO of Huawei’s Consumer Business Group, said I don’t think we need a QHD display on mobiles. Your eyes totally cannot identify between full HD and 2K on a smartphone. You can’t distinguish the difference, so it’s totally nonsense.” explaining that it’s not tomorrow that its high-end smartphones would offer higher resolution Full HD. Today, now it returns to the charge to bring us proof that Quad HD screens are completely useless on smartphones.
For Huawei, there is no doubt that the Quad HD screens are only a fad as had also said some analysts when the first phones with slabs of 2560 x 1440 pixels arrived on the market. Apart from the fact that a resolution of 300 to 400 dpi is more than enough for the human eye, the energy consumption caused by the resolutions of 300 dpi is excessive when it comes to a smartphone.
As demonstrated by the latest research on the subject, above 300 dpi, the human eye is unable to distinguish the difference if we are ever increasing number of pixels. Therefore, for a smartphone where the viewing distance is generally between 25 and 30 cm, the ideal resolution is between 283 and 340 dpi.
In the case of a tablet, the viewing distance is between 40 and 50 cm. Therefore, a resolution between 170 dpi and 213 would theoretically be sufficient. However, on a 10 inch screen, we tend to think that the difference between the different display definitions will be more important than a 5-inch screen.
Finally, for TVs where the viewing distance is between 2 and 4 meters the study states that 21 to 43 dpi resolution would be more than sufficient. Of course, in practice, it is usually 2 to 4 meters distance meters we watch television.
Quad HD has a negative impact on the battery’s performance over its lifetime. “We’re in no hurry to implement quick-charging for our devices, The power factor is very important on your smartphones, high-resolution display is diminished if it drains your battery at an alarming rate.
Finally, the study concluded that on the Quad HD is only a marketing argument and that the definition of a slab is not the only important factor when it comes to quality since it is also reflecting the brightness of the color range and the energy consumption.