The full name of the PPI is Pixel per inch, it describes the Pixel Density or Resolution of any electronic device such as a smartphone, monitor, TV etc. You can tell the screen sharpness of that device by looking at the PPI of any phone. It is believed that the more the PPI the phone will become, the more clearly the screen will be. Having more PPI on a screen means that the pixels pass on a screen to a nearby pass or have more pixels in less space.
In today’s day where visual computing has become extremely important, the importance of PPI has also increased, which has become a good marketing tool for the tech companies. PPI is a necessary metric but only PPI can not be considered a benchmark of sharpness or picture quality, because the distance between our eyes and the display also plays an important role for the picture quality. If you bring the screen closer to your eyes then you will be able to see the pixel, if you take the screen away from your eyes then after one level, additional pixel density will not be of any use because your eyes after this distance Can not notice.
In the case of smartphones, you work by keeping the screen near your eyes while the second large electronic display device is kept away according to different use. Like tablet, laptop is far away from eyes as compare mobile, while TV, LED, cinema screen stays even more distant. That is why, in all these devices, different PPI plays an important role according to the distance of the eyes.
Another related Smartphone terms:
4G | Smartphone | Network Technology | Network Speed | GPRS | EDGE | Body | Dimensions | Weight | Sim | Sim Slots | Display | Resolution | Pixel density (PPI) | Sensors | Protection | Camera | Android | OS (Operating System) | CPU | GPU | Chipset | ROM | RAM | WLAN | Bluetooth | GPS | Browser | Battery