OS Details

Honor 7X has been launched in December 2017.
Honor 7X have Android 7.0 (Nougat), upgradable to Android 8.0 (Oreo); EMUI 5.1

Screen Dimensions

Honor 7X screen size is 5.93 inch with ~ 77.0% body ratio of actual device size. Physical dimensions for Honor 7X device is 6.16 x 2.96 x 0.30 INCH or ( 156.5 x 75.3 x 7.6 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.

Honor 7X resolution is 1080 x 2160 ^PX with ~ 407 pixel desnsity.
Honor 7X viewport size is 360 x 720 ^PX with ~ 136 actual pixel density, which means it have 3 xxhdpi 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".

Honor 7X have 5.93" physical screen size and its resolution is about 1080 x 2160 Pixels with approximately 407 PPI pixel density. Honor 7X has viewport size 360 x 720 Pixels and its pixel ratio is about 3.

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

CSS Media Queries

Honor 7X css media queries will help developers to write styles specifically for Honor 7X. Here are details:

Honor 7X Media Queries (In terms of Mobile only)

@media only screen and (min-width: 360px) and (max-width: 767px) { /* Your Styles... */ }

Honor 7X Min-Width Media Queries

@media only screen and (min-width: 360px) { /* Your Styles... */ }

Honor 7X Min-Height Media Queries

@media only screen and (min-height: 720px) { /* Your Styles... */ }

Honor 7X Landscape Media Queries

@media only screen and (min-width: 720px) and (orientation: landscape) { /* Your Styles... */ }

Honor 7X Portrait Media Queries

@media only screen and (min-width: 360px) and (orientation: portrait) { /* Your Styles... */ }

Honor 7X Device Width Media Queries

@media only screen and (min-device-width: 360px) and (orientation: portrait) { /* Your Styles... */ }
@media only screen and (min-device-width: 720px) and (orientation: landscape) { /* Your Styles... */ }

Honor 7X Retina Media Queries

@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: 407dpi),
  only screen and (                min-resolution: 3dppx) { 
    /* 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 */
}
                                

Honor 7X Specifications

• Launch Date December 2017
• Android 7.0
• Physical Screen Size 5.93 INCH
• Resolution 1080 x 2160 PX
• Viewport Size 360 x 720 PX
• Pixel Density 407 PPI
• Device-Independent Pixels 136 PPI
• Pixel Ratio 3 xxhdpi
• Width 1080 PX
• Height 2160 PX
• Device Width 360 PX
• Device Height 720 PX
• Dimensions 156.5 x 75.3 x 7.6 mm (6.16 x 2.96 x 0.30 in)
• Weight 165 g - 5.82 oz