I have a question about connecting an Android phone to a Mac. I expect you'll need to know some specifics about the hardware and OS versions I'm using. So let me start with that.
Macbook: MacBook Pro Retina, Mid 2012, OS: OS-X 10.8.5 (Mtn. Lion)
Old smartphone: HTC Rezound, OS: Android 4.0.3 (Ice Cream Sandwich)
Old cable: Micro-USB connector to USB-A connector
New smartphone: LG V-20, OS: 7.0 (Nougat)
New cable: USB-C connector to USB-A connector
For years I've been able to connect my old Android smartphone (HTC Rezound) and my MacBook through a USB cable and OS-X will mount two filesystems from the smartphone so they appear on the Mac as if they were local filesystems. One filesystem represents the phone's internal memory and the other filesystem represents the MicroSD card in the phone. In a Finder window on the Mac, two new icons appear when I plug the phone in, one for each filesystem. And at a shell prompt, if I 'cd /Volumes', two new subdirectories appear.
I should mention that years ago, when I first connected the two, the HTC asked me if I wanted to use the connection to charge the phone or for data transfer, and I selected data transfer.
I'm now trying to set up my new smartphone which is an LG V-20. When I connect it to the Macbook with a USB-C to USB-A cable, the LG phone displays a number of things I might want to do with the connection, including charging the phone or data transfer, and I select data transfer. But on the Mac, no icons appear in Finder and no subdirectories appear in /Volumes.
So, I'm unable to access the phone's filesystems from my Mac.
Anybody have any ideas?