The Xiaomi Watch S4 supports automatically and manually adjusting the brightness, which can ensure visibility in bright environments and reduce eye strain in dim or dark environments.
To adjust the brightness of the Xiaomi Watch S4, please refer to the following details:
1. You can go to [Settings] >> [Display] >> [Brightness] >> [Auto] on the watch, and the brightness will be adjusted automatically according to the ambient light;
2. You can go to [Settings] >> [Display] >> [Brightness] >> disable [Auto] >> [Custom] >> adjust the brightness manually on the watch.
Note:
You need to disable [Auto] before adjusting the brightness manually.