You can download officially released third-party software from AppGallery, or download and install apps using a browser or USB storage device.

On the home screen of the large screen, choose Settings > Advanced > Apps > Permission Control, and enable Permission Control. Then, you can download and install apps on AppGallery.

If AppGallery is not displayed in the app list when you swipe left on the home screen, go to Settings > Advanced > Apps > Hide Apps and toggle off AppGallery.