OS Details

vivo Y20 has been launched in August 2020.
vivo Y20 have Android 10 , Funtouch 10.5

Screen Dimensions

vivo Y20 screen size is 6.4 inch with ~ 81.6% body ratio of actual device size. Physical dimensions for vivo Y20 device is 6.47 x 3.00 x 0.33 INCH or ( 164.4 x 76.3 x 8.4 MM).

Displaying of Units are in this order "Height x Width x Thickness"

Screen Pixel Density and CSS Pixel Ratio

"Pixel" is smallest unit/element of any display.

The total number of pixels that fit into an inch is referred to as "Screen Density" or "Pixel Density" and it measured as "Pixels Per Inch".
Pixel Desnsity have limits to display Pixels Per Inch depends on different screen sizes. When number of pixels per inch increases than it's screen-size limit, the Display resolution will increase but actual device width/height in pixels remain same. Actual device pixels are known as Device Independent Pixels or CSS Pixel Ratio.

vivo Y20 resolution is 720 x 1600 ^PX with ~ 270 pixel desnsity.
vivo Y20 viewport size is 385 x 854 ^PX with ~ 144 actual pixel density, which means it have 1.875 hdpi display pixel density.

Screen Resolution and Viewport

The sum of pixels which are displaying on a device is called as "Screen Resolution". and sum of actual pixels of any device is reffered to as "Viewport".

vivo Y20 have 6.4" physical screen size and its resolution is about 720 x 1600 Pixels with approximately 270 PPI pixel density. vivo Y20 has viewport size 385 x 854 Pixels and its pixel ratio is about 1.875.

For better understanding screen actual sizes, viewport sizes, display resolution and about their density click here.

CSS Media Queries

vivo Y20 css media queries will help developers to write styles specifically for vivo Y20. Here are details:

vivo Y20 Media Queries (In terms of Mobile only)

@media only screen and (min-width: 385px) and (max-width: 767px) { /* Your Styles... */ }

vivo Y20 Min-Width Media Queries

@media only screen and (min-width: 385px) { /* Your Styles... */ }

vivo Y20 Min-Height Media Queries

@media only screen and (min-height: 854px) { /* Your Styles... */ }

vivo Y20 Landscape Media Queries

@media only screen and (min-width: 854px) and (orientation: landscape) { /* Your Styles... */ }

vivo Y20 Portrait Media Queries

@media only screen and (min-width: 385px) and (orientation: portrait) { /* Your Styles... */ }

vivo Y20 Device Width Media Queries

@media only screen and (min-device-width: 385px) and (orientation: portrait) { /* Your Styles... */ }
@media only screen and (min-device-width: 854px) and (orientation: landscape) { /* Your Styles... */ }

vivo Y20 Retina Media Queries

@media
  only screen and (-webkit-min-device-pixel-ratio: 1.875),
  only screen and (   min--moz-device-pixel-ratio: 1.875),
  only screen and (     -o-min-device-pixel-ratio: 1.875/1),
  only screen and (        min-device-pixel-ratio: 1.875),
  only screen and (                min-resolution: 270dpi),
  only screen and (                min-resolution: 1.875dppx) { 
    /* Retina styles here */
}
                                

Retina is actually based upon device pixel ratio. Devices mostly have 2x or 3x display so you can use general retina media queries to display high resolution content on all kind of devices. Retina 2x and Retina 3x media queries given below:

Retina 2x Media Query (for all 2x resolution supported devices)

@media
  only screen and (-webkit-min-device-pixel-ratio: 2),
  only screen and (   min--moz-device-pixel-ratio: 2),
  only screen and (     -o-min-device-pixel-ratio: 2/1),
  only screen and (        min-device-pixel-ratio: 2),
  only screen and (                min-resolution: 192dpi),
  only screen and (                min-resolution: 2dppx) { 
    /* Retina styles here */
}
                                

Retina 3x Media Query (for all 3x resolution supported devices)

@media
  only screen and (-webkit-min-device-pixel-ratio: 3),
  only screen and (   min--moz-device-pixel-ratio: 3),
  only screen and (     -o-min-device-pixel-ratio: 3/1),
  only screen and (        min-device-pixel-ratio: 3),
  only screen and (                min-resolution: 384dpi),
  only screen and (                min-resolution: 3dppx) { 
    /* Retina styles here */
}
                                

vivo Y20 Specifications

• Launch Date August 2020
• Android 10
• Physical Screen Size 6.4 INCH
• Resolution 720 x 1600 PX
• Viewport Size 385 x 854 PX
• Pixel Density 270 PPI
• Device-Independent Pixels 144 PPI
• Pixel Ratio 1.875 hdpi
• Width 720 PX
• Height 1600 PX
• Device Width 385 PX
• Device Height 854 PX
• Dimensions 164.4 x 76.3 x 8.4 mm (6.47 x 3.00 x 0.33 in)
• Weight 192.3 g - 6.51 oz