Retroid Pocket 4 Pro — 325.6 PPI
The Retroid Pocket 4 Pro retro gaming handheld features a 4.7-inch 750 × 1334 IPS touchscreen at 326 PPI.
325.6
PPI
Ultra High DensityAt 326 PPI, this exceeds the ~300 PPI threshold where individual pixels become imperceptible at hand-held distance. This is Retina-class density — sharp enough that increasing PPI further yields diminishing visible returns.
Compare with similar handhelds
204.0 PPI
Steam Deck OLED
1280×800 · 7.4″ · High Density
215.6 PPI
Steam Deck LCD
1280×800 · 7″ · High Density
314.7 PPI
Asus ROG Ally X
1920×1080 · 7″ · Ultra High Density
343.1 PPI
Lenovo Legion Go
2560×1600 · 8.8″ · Ultra High Density
209.8 PPI
Nintendo Switch OLED
1280×720 · 7″ · High Density
236.9 PPI
Nintendo Switch
1280×720 · 6.2″ · High Density
Calculate any screen's PPI
PPI Calculator
√(W²+H²) ÷ size — precise to 0.1 PPIUnit:
in
Use the diagonal printed on the box or spec sheet.
in wide
For when you measured the viewable width with a ruler.
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PPI
—PPI = √(W² + H²) ÷ diagonal · Retina-class estimate ≥ 300 PPI (approximate; depends on viewing distance)