Hi @SL1108 and welcome to the support forum!
Your question has been translated to English as this is an International forum, please post any replies in English and it will be easier for me and other users to assist you.
Could you please elaborate your question a bit? Does your question regard the volume keys or the volume sliders found in the phone settings?
Please return to us with a more detailed question and we will do our best to assist you! 
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