Grainy screen protector
A grainy, sparkly or slightly rainbow look after fitting a screen protector is the protector, not the screen: matte protectors scatter light and make white look like fine sand, and a cheap glass protector with a thick adhesive layer adds a faint moiré against the pixel grid.
Test it now
Full-screen white and look at it from 30 cm: fine sand = matte protector. Remove the protector and look again — if white is clean, the protector was it.
What it is
A grainy, sparkly or slightly rainbow look after fitting a screen protector is the protector, not the screen: matte protectors scatter light and make white look like fine sand, and a cheap glass protector with a thick adhesive layer adds a faint moiré against the pixel grid. The screen underneath is fine.
Can it be fixed?
Yes. Swap to a clear glass protector (not matte); if a clear one is still grainy it is a low-quality protector — a better one fixes it.
What to do
- Confirm on white.
- Remove the protector; test again.
- Fit a clear tempered-glass protector from a known brand.
- Matte lovers: a matte protector is always slightly grainy; that is the trade.
What a repair costs
| United States | $80–200 for a display on most Android phones; $200–380 at Apple for an iPhone screen out of warranty ($29–99 with AppleCare+) |
|---|---|
| India | ₹2,000–6,000 for a display on budget and mid-range Android phones at an independent shop, ₹6,000–20,000 for flagship OLED screens at the brand service centre; iPhone screens ₹12,000–35,000 at Apple-authorised service |
Typical ranges from repair-shop and manufacturer price lists, 2026-09-06. Get two quotes; prices vary by model and city.
Warranty
Most makers replace a panel under warranty for physical panel faults that are not accidental damage; pressure marks, cracks and liquid damage are treated as accidental and are not covered. For dead pixels, each brand has a threshold (typically 3–5 bright or 5–8 dark pixels on a laptop; Dell's premium-panel guarantee replaces at one bright pixel).