Ok, i should have written “since last charge, wich was a full one”.
No, I’m not using any widgets nor live wallpapers.
I put the phone into safe mode, to check whether in this case battery drain changes. I will let you know the results.
Check out this post
Apparently I was wrong, I didn’t disable the Google News “widget” running on the background (the one which appears if you swipe all the way to the left).
I don’t know whether that was the cause of the problem, since I also uninstalled another app called “wordaily”, which I should reinstall to check this, but I don’t have access to the phone right now, so I will eventually let you know. I also cleared both the cache and the saved data from QuickStep (the last operation deleted all the apps in the launcher), hence this could also be a solution in case you face similar problems.
I hope this is somehow useful.