Usar o APKPure APP
Obter o APK da versão antiga de Rotate Screen para Android
Alterar a orientação facilmente com notificação e widget.
If the orientation is locked, other apps can't change the orientation. For example:
Fullscreen video want change it to landscape.
This app have a widget. If you want to add widget:
Go to homescreen and hold down your finger on empty space, select widgets and slide the screen until find it