I guess that could work but I would use my computer to go into my system folders and look up the apk in the system files and copy it to my desktop. Then I would plug in my other phone and replace the music stock app on that with the galaxy players stock music. I'm not sure if that would work but you can give it a try. Also remember to take the music apk from your other phone and put it in a safe place you know so you don't lose your other phones stock music app.
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