The problem is solved, thanks again.
But in my previous smartphone Tracklogs were on SD-card, I set in Oruxmaps setup the folder of Mapfiles and Tracklogs on SD-card, and it did function as well.
I cannot understand why Oruxmaps recognuized the tracklogs on SD-card, and now in the new smartphone it does not more.
Anyway the problem is solved, let's close here.
Nereo Refosco.