Samsung mobile phone horizontal screen vertical screen adjustment method
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Open the home screen of your Samsung phone, and then pull down the Notification bar from the top of your phone.
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Then your finger continues to pull down the icon position above the [Notification bar] to expand the [notification bar] icon.
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Then light the \"Automatic rotation\" icon, you can automatically switch between horizontal and vertical screen.
Open the drop-down menu on your phone and click the Rotate button.