• That depends on what apps you use. But for example YouTube app in tablet mode looks nicer in landscape:

    In phone mode you can only view comments/live chat in portrait mode.

    In tablet mode, this is often the other way around. Some comparisons:

    Google Photos

    Phone mode:

    Tablet mode:

    YouTube

    Phone mode:

    Tablet mode:

    Google Mail

    Phone mode:

    Tablet mode:

    etc.