On Monday 31 August 2020 09.54:16 J Leslie Turriff wrote:

> 	If I understand you correctly, MTP works for older phones but not newer
> ones? I had the impression from reading this thread that MTP was something
> new; now I'm confused. :-)
>
> Leslie

Mass storage and MTP can coexist, older phones had this option. MTP was 
introduced by Microsoft and, as usual, we lost the alternative on the way.

As I have hardly used MTP at all, I don't know the difference. I had a feeling 
that mass storage let you see your phone as an external drive, while MTP 
(Media Transfer Protocol) onyl gave you acces to "media" (music, photos, 
videos) but not to the rest of the drive - maybe I'm wrong.

Thierry