I have a Galaxy Z Fold 3. I use an Apple dongle.

I have a Galaxy Z Fold 3. I use an Apple dongle.

Amazon.

I don’t use AutoEQ. The only EQ I use is Poweramp on my phone.

You don’t have to use Bluetooth when using headphones with an iPhone. You can use a Lightning to 3.5mm connector.

You don’t, if your stuff has a proper seal.

Yeah. I take my Zero Reds out with me all the time.

No, you won’t go deaf, as long as you don’t use audio products with the volume cranked up all the way. I’ve been using headphones, earbuds, and more recently IEMs for most of my life and I still have very good hearing.

Also, 16% volume’s very quiet, you should turn up the volume so that it’s loud enough for you to hear what you’re listening to, but not so loud that you’d “blow your eardrums out.”