Screen (v5.1)
The screen is too dark.
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The [Adaptive brightness] setting reduced the brightness according to the ambient brightness. Manually adjust the screen brightness.
1.
From the home screen, tap → [Settings] → [Display].
2.
Tap the [Adaptive brightness] switch to turn it off.
3.
Tap [Brightness level] and then adjust the slider.
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The [Minimum limit brightness] setting of customized silent mode was turned on. Turn the setting off.
1.
From the home screen, tap → [Settings] → [Sound & notification] → [Customized silent mode].
2.
Tap the [Customized silent mode] switch to turn it off, then tap the [Minimum limit brightness] switch to turn it off.
3.
Tap the [Customized silent mode] switch to turn it on.
There are red, green, or blue dots on the screen, or there is unevenness in screen colors or brightness.
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The following are not malfunctions.
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Although advanced high-precision technologies are used in the production of color LCD screens, a very small number of the screen pixels may be dark or remain constantly lit.
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Due to the natural characteristics of LCD screens, you may notice unevenness in colors and brightness depending on your angle of view. Hues may also vary by product.
I cannot operate the touchscreen.
The touchscreen operates involuntarily.
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Temporarily put the unit into sleep mode and then wake it up again.