Scrolling stripes can appear in low-brightness settings due to screen refresh rate issues, interference from APPs, or hardware problems like a faulty display or connection. It is also linked to how the screen adjusts brightness dynamically.
Thank you for your support of Xiaomi products. The Xiaomi smartphone will go through strict professional inspections before leaving the factory, so you can use it with confidence. OLED products are self-luminous and controlled by current. The lower the brightness, the smaller the current, resulting in uneven color and slight horizontal lines phenomenon in low brightness and low gray scale environments, which is a normal phenomenon, and does not affect your normal use. You can try to adjust the brightness of the screen to get a better using experience.