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Why does the screen become black after adjusting the brightness to the minimum on the POCO C61?

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Why does the screen become black after adjusting the brightness to the minimum on the POCO C61?

The screen of the POCO C61 appears completely black or hard to see when sliding the brightness bar to the minimum.
To address this issue, please refer to the following steps:
1. Plug in the original charger and press the power button. If you feel a vibration, use a torch to shine the screen. This can help you determine if the screen is displaying content, however, is too dim to see at low brightness levels;
2. Try adjusting the brightness bar to the middle range. If the screen becomes visible, it indicates that the minimum brightness setting is too low for proper visibility, and adjusting it slightly upward can help;
3. Update the system version to check if the issue has been resolved.