Our infant son threw me wife's phone. Since then the top 1 cm row of the screen is no longer responsive to touch. The display works perfectly, but touching it has no effect. Because of that she can no longer swipe down the notification tray in portrait mode. She has to open some app, rotate to landscape orientation, and swipe down.
Some apps which do not rotate or reorients the buttons in such a way that it is always in unresponsive zone are impossible to use. We can use split screen as the last workaround sometimes.
Anyway. I was wondering if there is any app for Android which force the whole OS to render in the responsive region only. I can manually select the responsive rectangular region. (Buying a new phone or changing the screen is not an option right now.)