What is the OP talking about? And why would anyone install an app to use headphones?
Well, you can, but you first have to enable that using the app.
The QC II’s bluetooth range is horrible. Less than half of the QC I’s.
You don't ALWAYS need/want that feature.
Some reasons:
* Safe battery life
* Hear conversation or important sounds in the background
Most headphones (all I've purchased) have a dedicated hardware button. In fact, all of them have 3 modes: Noise cancelling ON, noise cancelling off (Switch), noise cancelling off + enhanced microphone (quick transient button, to quickly hear e.g. captain announcement etc). Can't imagine having to do that through software, it'd defeat the convenience.
That being said, fully agree; my Sennheiser HD380 with 3.5mm jack have lasted a decade and I don't know when or if I'll ever need to replace them. They sound and feel as good as new.
The expensive Bluetooth headphones and headsets are a disposable commodity with inferior user experience for at least some use cases (Pairing? Latency? Battery? Software? You don't have to worry about those with 3.5mm:). Yet, there's a positive ARMY of people who always join in to defend the removal of 3.5mm jack - even though they gained nothing from it, and some of us lost a lot :-/
I sometimes wear glasses which prevent the headphones from forming a perfect seal. If I walk around with the headphones on, I get a "wow" going on which is quite tiring. Turn the NC off and they're ok. I only rarely do this, so I wouldn't have bought a dedicated pair only for this purpose.
If this is Sony's way of forcing me to use their app, they guessed wrong. I just bought these and am considering returning it.
For some reason mine's volume works as expected on an iphone (phone and headphone control the same volume) but on a pc (windows / mac / linux) the controls work separately...