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Question of what is my screen resolution can be a complex one to solve.

When it comes to visual devices, a look at the actual display often has more impact than a long description. After the introduction of the Retina display and its positive response, various manufacturers have launched smartphones, tablets and PCs with displays with high pixel density, so that they have become widespread among normal users.

In the last few years, products with ultra-wide screens have also entered the market, featuring even wider screens. These are products with super-wide screens that have an aspect ratio of 21:9. They are not suitable for switchers from environments with a single normal screen, but there is replacement demand from business users who regularly work with spreadsheets, as well as from users who come from environments with two side-by-side screens.

Retina Display is a brand name used by Apple for its series of IPS LCD and OLED displays that have a higher pixel density than traditional Apple displays. ... Apple calls this mode HiDPI mode. In simpler words, it is one logical pixel = four physical pixels.