Hi ali.sabir71
If possible, please kindly provide us below information.
1.) Do you use bluetooth earphone or wired headset (Brand and model name of the earphone).
2.) Could you please kindly point out how does the sound volume low? If possible, Could you show me a sample of this matter?
3.) Is there any music file or youtube link easier to duplicate?
4.) Have you enabled the setting in developer options?
Please help to confirm,thank you:)