Stopping the Screen from Automatically Rotating on Your Galaxy S8 & S8+
The Auto Rotate feature uses an internal sensor to detect the rotation of your device and adjusts your screen accordingly. The feature is turned on by default but can be adjusted at any time.
The available screens and settings may vary by wireless service provider and software version.
To open the Notification Panel, swipe down from the top of the screen.
To turn off the rotation, touch Auto rotate.
Depending on the screen orientation when touching Auto rotate, the icon changes the screen to either Landscape or Portrait.
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