How do I adjust the brightness of the Glyph Interface? July 09, 2024 11:10 Updated Go to Settings > Glyph Interface and slide the bar to adjust brightness. Related articles How do I choose the Glyph Interface for ringtones? How do I turn the Glyph Interface on/off? How do I change the wallpaper and accent colours on my Phone? How do I download the latest firmware? How do I adjust the Glyph light for ringtones?