Android File Transfer Does Not Recognize the Device

Previously, when Galaxy S3 was not recognized on a Mac, I chose PTP and it worked, but is it not recognized even with PTP?

http://jmsnews.blog38.fc2.com/blog-entry-30.html

Is it a USB for data transfer?
There is also a USB with only charging function, so please check it out.

After updating to Android 6.0, I didn't use File Transfer for a while, so I ignored the "Can't access device range" display when I connected to the mac when charging.

Today, when I tried to transfer the music file, I got into trouble like a questioner, so I ended up here.I tried to respond like the answer above, but in 6.0, there was no developer option in the settings, which was troubling me.

Then, after unlocking the terminal (with the time set to 10 minutes), reseating the genuine USB cord, and then swiping from top to bottom, the tab "Use USB for charging Tap to display other options" appeared."Tap to select ""Charging Only/MTP/PTP/MIDI"" button under the title ""Use USB""."When I chose MTP here, File Transfer was recognized and I was able to transfer music files.

Reseating the cord, increasing the lock time, and hitting the TV are old-fashioned ways, but now that the purpose has been achieved, I'll write it down here.I hope I can be of service to someone.