Smartphone Screen Test Online
Touch-friendly display test for iPhone (Super Retina OLED) and Android phones (Samsung Dynamic AMOLED, Google Pixel).
Start Touchscreen Pixel Test
Single-tap or swipe anywhere on screen to cycle colors. Drag the floating stuck pixel tool over any stubborn spots.
Testing Tips for Mobile Devices
- Clean the Glass: Fingerprint grease and lint easily mimic tiny subpixel dots on high-density (450+ PPI) smartphone screens.
- Turn Off True Tone / Night Shift: Disable ambient color shifting in your phone settings to inspect pure RGB values.
- Inspect Punch-Hole & Island Borders: Carefully check around the front camera cutout for subpixel discoloration or backlight bleed.
- Check Status Bar Burn-In: Display solid gray and red to check if the battery icon, Wi-Fi symbol, or clock are permanently retained.
Related Display Tests & Diagnostics
Frequently Asked Questions
How do I test an iPhone or Android screen for dead pixels?
Open deadpixeltests.com/tools/dead-pixel-test/ on Safari or Chrome, tap 'Start Dead Pixel Test', and tap anywhere on the screen or swipe left/right to cycle through full-screen solid primary colors.
Can smartphone OLED screens get burn-in from navigation bars?
Yes. Static UI elements like the battery icon, clock, signal bars, and keyboard outlines can cause differential subpixel wear over years of high-brightness usage. Displaying solid gray or blue highlights these retention outlines.
Why should I disable True Tone or Night Shift during a phone screen test?
True Tone and Night Shift automatically adjust color temperature based on ambient lighting, creating a warm amber tint that masks subpixel color deficiencies. Turn them off temporarily to see calibrated pure RGB colors.