Phone buying guide

PWM-sensitive? Test the phone, not the promise

Display specs narrow the shortlist, but no OLED is comfortable for everyone.

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Build the shortlist

Start with the display strategy

Compare LCD, DC-dimming and high-frequency PWM options. Each still needs a real-use check.

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Read the evidence

Specifications are only a filter

Frequency, modulation, brightness and firmware can all change how a screen behaves.

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Before testing

Enable the documented display setting

Toggle names and effects vary by model. Confirm the current manual before testing.

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First pass

Test at your normal brightness first

Use the reading, video and scrolling tasks you actually do each day.

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Low-light pass

Repeat at a lower brightness

OLED dimming behavior may change as brightness falls. Keep the same room and screen content.

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Store check

Compare camera bands, not just one photo

Use the same camera, exposure and distance on each phone for a fair comparison.

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Read cautiously

Banding is a clue, not a lab result

Camera bands can reveal pulsing, but not exact PWM, modulation or medical conclusions.

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Final decision

Let the return window settle the choice

Try normal use briefly. Stop if discomfort occurs; return it before the seller's deadline.

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One last check

Run one controlled flicker comparison

Use the same brightness and camera setup, then save the result with your buying notes.

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Run the PWM flicker test