Thank you for supporting Xiaomi products. The device undergoes rigorous professional inspection before leaving the factory, so you can use it with confidence. OLED screens can show slight ghosting or text trails when scrolling in dark mode, which is a normal phenomenon. You can try increasing the screen brightness, switching to light mode, or switching to left-right page flipping in reading APPs to improve the experience.
To adjust the brightness on the phone, please refer to the following steps:
1. Go to [Settings];
2. Tap [Display & brightness];
3. Slide the brightness bar to adjust the brightness level.