Hi friend
Thank you for your asking. To avoid any misunderstanding in the conversation, please provide me further information in English.
1. Model Name: Settings>System>About phone
Refer to the link below to check the model name by model no. in the link
https://www.asus.com/support/FAQ/1014441/ 2. Your current firmware version
Setting >System>About Phone>Software information
If you try to update to the latest version, does the issue still remain?
3. Are you asking for earphones issue? Could the earphones be used in other device? Does the issue appear after any system/apps download or upgrade? Do you have more issue detail?