Xiaomi smartphones undergo strict professional inspection and strict quality control before leaving the factory, so please feel free to use it.
To obtain a better battery life, please set up the display of the device as following steps:
1. Go to [Settings];
2. Select [Display & brightness];
3. Select [Dark Mode];
4. Turn on [Auto brightness];
5. Tap on [Refresh rate];
6. Select [Default (recommended)].