1. Tap "Selecting an image to adjust the brightness (six maximum)" and select an image from the album.
2. Adjust the brightness of the image by moving the slider left or right.
3. To return the brightness of the image to the default state, tap "Restore" at the bottom left.
4. Tap "Save" in the bottom right to save the image in "BRI_DATA" which is automatically generated in the album.

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