On the subject of volume. When I’m casting TV off my phone to my tv through Chrome cast my phone controls the volume of the TV by default and my phone volume second. Is there a way to switch that? I cast things for my daughter to watch while I play on my phone. But when I need to turn my phone volume up or down I either blare the living room tv or drop the volume to off by accident. It happens a lot and hope there’s a way I can change it. I change my phone volume alot more than my tv.
Is this something you have tried on a different phone? I’m wondering if this is the default Android behavior - doesn’t sound like the best though. I’ll give it a try as soon as my kids get off the Xbox 
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ps: moved this out to its own topic.