I use Hualai of P20 pro. I am in Settings > Voice > Dolby Panoramic Sound >: Music (mode). There is a graphic equalizer at the bottom of the sound source. I don't know the original white theory, but the minimum volume is obviously reduced after all the values are adjusted to-12dB!
I don't know that other models of Huawei smart phones don't operate properly.
Adjust the volume of headphones through the volume key of mobile phone. When the phone headset is plugged in and music or video starts to play, press the volume button to adjust the volume of the headset.
You can also drop down the mobile phone status bar, find the volume switch in the mobile phone status bar, and then click the volume switch to adjust the earphone volume;
The last method is to go to the settings of the mobile phone and find the sound option on all the settings pages, which has the option of adjusting the volume of the earphone.
1. First, click Settings and turn it on in standby mode.
2. After entering the settings, find the sound option and click Open.
3. After entering the sound, click the volume option.
4. At this time, a pop-up window will pop up, and the slider of ringtone, media and call options will be moved to the right to increase.
5. In addition, in the sound option, turn on the DTS sound function of the headset, or turn up the volume.