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LCD vs OLED phone screens: how to tell

A quick black-screen test can tell you why one screen repair costs more than another.

Direct answer: To tell LCD from OLED, open a pure black image in a dark room and turn brightness up. If black looks truly off, it is probably OLED; if it glows dark gray, it is probably LCD.

Screen type is one of the biggest reasons repair quotes vary. Two phones can both have cracked screens, but the part cost can be totally different.

The quick test

  1. Open a pure black image full screen.
  2. Go into a dark room and raise brightness.
  3. Look at the black area. OLED pixels shut off and look truly black. LCD panels still glow because they use a backlight.

Why it matters

LCD panels are usually cheaper and common in budget phones, older iPhones, and many entry-level Androids. OLED panels are thinner, brighter, and more expensive to manufacture. They are common in newer iPhones, Samsung Galaxy S/Z models, and many newer Pixels.

Bench note: Model number matters more than the marketing name. Texting the exact model lets me quote the right part instead of guessing.

OEM, aftermarket, and practical choices

There are often several part grades. The best choice depends on device value, color accuracy needs, budget, and whether Face ID, fingerprint, or brightness behavior could be affected.

Dealing with this right now?
Send the model, what happened, symptoms, and a photo if you can.
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