mobile

So my Z2 tablet arrived today through the mail, and I'm already getting disappointed. To being with, the speakers lower volume by themselves, without reducing the actual system volume. I noticed that is only for music, be it on Walkman, Spotify or YouTube. It starts with regular volume and then it changes by itself gradually, and I have to reset volume or turn the tablet around so it can come back to its regular state, but just for a minute before audio goes down again. I also noticed sometimes a little grain noise on the right side speaker, although I read at some places this is due to the waterproof seal, need confirming on this though. Also, I got it today, didn't do anything to it and it's already kind of bent. The package came factory sealed, so I'm assuming it bent on my hands. Really? That easy? Anyways, do you guys know a solution to this speaker problem? It doesn't seem to be a hardware condition, since regular videos works fine. Is the software doing some sort of bull**** and altering the volume? Thanks in advance.

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