Samsung SM-S901B/DS User Manual page 50

Apps and features
Screen off memo
You can quickly create memos by writing on the screen without turning on it.
When the screen is off, detach the S Pen or hover the S Pen over the screen and press the
S Pen button.
When you tap Save or reinsert the S Pen into the slot after writing a memo, the memo will be
saved to Samsung Notes.
Change the pen colour.
Change the line thickness.
If this feature is not activated, launch the Settings app, tap Advanced features → S
Pen, and then tap the Screen off memo switch to activate it.
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Eraser
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Save the memo in Samsung Notes.
Pin the memo on the Always On
Display.
Extend the page.