You can fix this though! All you need to do it press your lock screen, then tap customise. You should then see a little ...

To switch off call screening, open the Settings app and head to Apps > Phone. Scroll down to the Screen Unknown Callers ...

Drag the divider to the left or right to easily get out of split screen. Hide floating apps by converting them to split screen and dragging the divider left or right. Completely disable split screen ...

Drag and swipe to return to full screen—or stop it from coming back Drag the divider to the left or right to easily get out of split screen. Hide floating apps by converting them to split screen and ...