Can I change in the settings menu the default memory and how for a Moto E OS 5.1 from Open Mobile?Can't download my music,videos and movies to my external memory.
Welcome to Android Central! This setting is only available on some devices, so if you don't see it on your phone's settings, it isn't possible to set it as a universal default (unless perhaps if you root the phone).
Certain apps may give you the option to select the SD card as the default download location, but you'd have to check each app's settings for that.