Horizontal resolution: 1920 pixels
Vertical resolution: 1080 pixels
Diagonal: 21.5 inches (54.61cm)

Display size: 18.74" × 10.54" = 197.52in² (47.6cm × 26.77cm = 1274.32cm²) at 102.46 PPI, 0.2479mm

monitor Acer S221HQL
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Information for screen: "\\\\.
DISPLAY1"
Available geometry: 0 0 1920 x 1040
Available size: 1920 x 1040
Available virtual geometry: 0 0 1920 x 1040
Available virtual size: 1920 x 1040
Depth: 32 bits
Geometry: 0 0 1920 x 1080
Logical DPI: 96
Logical DPI X: 96
Logical DPI Y: 96
Physical DPI: 72.0177
Physical DPI X: 72.0355
Physical DPI Y: 72
Physical size: 677 x 381 mm
Refresh rate: 60 Hz
Size: 1920 x 1080
Virtual geometry: 0 0 1920 x 1080
Virtual size: 1920 x 1080

(android nexus 4 the correct information)