How can I rotate the screen of Iphone 11 upside down or 180 degrees?

Hello joahna258,

Thank you for using Apple Support Communities! I understand from the information you provided that you want to know how to rotate the screen on your iPhone; I'd like to help.

The following support article provides some help for issues rotating your screen:

If the screen doesn't rotate on your iPhone, iPad, or iPod touch - Apple Support

Keep in mind that some, but not all apps rotate. Also, only the Plus and Max iPhone models can have the Home screen rotate.

Hope this helps.

Best Regards.