Browsing MP3 files on my smartphone (Androïd)

[JJ_Johnson]

@ohrenkino

And finally: if you altered your workflow so that you keep the master of your collection on a PC and sychronize it with the smartphone you could use merits of MP3tag. In respect to "backup" this would be the solution with more advantages ... a smartphone may be lost or get stolen ...

I completely agree with this. The files on your smartphone should be copies of files from a master library that you keep and maintain on a computer or file server. Although in most cases it is possible to have Mp3tag edit files on the device itself, it's not a very good long term plan.