DEVICE GUIDE
How to test a phone screen
A touch-friendly check for pixels, tint, gradients and possible retention.
Updated September 1, 2026 · 5 minute read
Before you begin
These are visual browser checks, not manufacturer certification, professional calibration or repair diagnosis.
A focused five-step check
- 01
Clean the glass and disable auto-brightness briefly.
- 02
Rotate the phone and check solid fields in both orientations.
- 03
Swipe between colors and inspect edges around cutouts.
- 04
Use low-grey fields in a dim environment without holding them for long.
- 05
Exit with the visible control if browser fullscreen is unavailable.
GOOD TO KNOW
Mobile browser UI, safe areas and color management can affect the visible canvas.