Oppo
One-Handed Mode: Turn On or Off auf Oppo
One-Handed mode on Oppo phones compresses the entire screen into a smaller window that sits in one corner of the display. This is meant for large-screen devices where the top rows of icons or the status bar sit far out of thumb reach.
The function lives inside the Quick settings panel, not in the main Settings app, which is why many owners overlook it. Once active, the reduced window can be dragged to the edge you prefer, and every app keeps working normally inside it, just at a smaller scale.
Turn One-Handed mode on or off
Swipe down with two fingers from the top of the screen to open the Quick settings. Tap on One-Handed mode to shrink the display into a compact window.
To exit and return to the full screen, tap Enlarge inside that window.
If the tile is missing from Quick settings, it usually means the panel has been rearranged and the tile was moved off the visible row rather than removed entirely. In that case, edit the Quick settings layout and add the tile back before repeating the steps above.