Samsung Galaxy Dead Pixel — S25 Ultra, S24 & S23 Ultra
Samsung Galaxy S series phones use Dynamic AMOLED 2X panels. Dead pixels on AMOLED behave differently from LCD — run the test below to confirm the type of defect and decide your next step.
Test your Samsung Galaxy display
Open on your Samsung Galaxy. Set brightness to maximum and disable adaptive brightness. Tap full screen and cycle through all colours.
Press F11 for best results on desktop
How dead pixels appear on Samsung Dynamic AMOLED 2X
AMOLED (Active Matrix Organic Light Emitting Diode) panels are fundamentally different from LCD. Each pixel produces its own light — there is no backlight. When a pixel is off, it is true black — not dark grey like IPS. This makes stuck pixels dramatically obvious on a black screen: they appear as a bright coloured dot against absolute darkness.
Dead pixel (black dot)
OLED element has failed — transistor outputs nothing. Stays black on every colour including white. Cannot be fixed by software. Requires Samsung service or warranty claim.
Stuck pixel (coloured dot)
OLED sub-pixel stuck in one state. Visible as a red, green, blue, or white dot on black. Try the pixel fixer for 20 minutes — AMOLED stuck pixels sometimes resolve.
Galaxy S series display specs
| Model | Display | Resolution | PPI | Notes |
|---|---|---|---|---|
| Galaxy S25 Ultra | 6.9" Dynamic AMOLED 2X | 3088×1440 (QHD+) | 505 PPI | Titanium frame, S Pen slot — check around S Pen area for pressure marks |
| Galaxy S25+ | 6.7" Dynamic AMOLED 2X | 3080×1440 (QHD+) | 505 PPI | Flat panel — easiest to test of the S25 range |
| Galaxy S25 | 6.2" Dynamic AMOLED 2X | 2340×1080 (FHD+) | 416 PPI | FHD+ panel — lower PPI makes pixels slightly more visible |
| Galaxy S24 Ultra | 6.8" Dynamic AMOLED 2X | 3088×1440 (QHD+) | 505 PPI | Titanium flat display — same AMOLED characteristics as S25 Ultra |
| Galaxy S24+ | 6.7" Dynamic AMOLED 2X | 3080×1440 (QHD+) | 505 PPI | — |
| Galaxy S24 | 6.2" Dynamic AMOLED 2X | 2340×1080 (FHD+) | 416 PPI | — |
| Galaxy S23 Ultra | 6.8" Dynamic AMOLED 2X | 3088×1440 (QHD+) | 500 PPI | S Pen slot — check pressure-mark area around slot edge |
Samsung Galaxy S series dead pixel warranty
Samsung Galaxy S series phones carry a 1-year manufacturer warranty (2 years in some regions). Dead or stuck pixels from manufacturing defects are covered under warranty, but a single isolated pixel usually does not meet Samsung's threshold. A cluster of defects, or a pixel defect combined with other evidence of a manufacturing fault, has a stronger claim.
Your fastest path to replacement is through the retailer return window (Amazon: 30 days, Samsung.com: 15 days, Best Buy: 15 days). Photograph the defect, keep your receipt, and contact the retailer within that window.
Frequently asked questions
Does Samsung cover a dead pixel on the S25 Ultra?+
Samsung's warranty applies a pixel defect threshold — a single pixel is typically within tolerance. Multiple defects or a cluster may qualify. Contact Samsung Support at samsung.com with photos. Verify the current policy at samsung.com before purchasing or claiming.
How do I test my Samsung Galaxy S24 or S25 for dead pixels?+
Open the test tool above in Samsung Internet at maximum brightness. Cycle through solid black (reveals stuck bright pixels) and white (reveals dead dark pixels). Spend 20–30 seconds per colour.
What is the difference between a dead pixel and burn-in on Samsung AMOLED?+
Dead pixel = single fixed dot, appeared suddenly. Burn-in = gradual fading across a larger area from static content. Use the grey test background to distinguish them — burn-in shows as uneven brightness tinting; dead pixels are isolated dots.
Can a stuck pixel on Samsung Galaxy be fixed?+
Sometimes. Run the pixel fixer for 20 minutes. AMOLED stuck pixels are less responsive to software cycling than IPS LCD, but it is worth trying before a warranty claim.