1. Make sure that automatic horizontal and vertical screen switching is turned on, pull down the notification bar from the top of the tablet and turn on the automatic rotation switch.

2. Check whether there is a switch to open landscape mode in the internal settings of the application. If there is such a switch, please turn it on.

3. In landscape mode, if the application home page is displayed in the center of the screen. Because you have opened the parallel view, please search for the parallel view in the setting search bar and turn off the switch after application. Please try it now and see if it can be displayed horizontally normally.