★ screen off memo for only samsung galaxy note9, note 8, note 5 & galaxy note 3 screen off memo is the most useful feature of galaxy note 9, which allows you to quickly take samsung notes while the screen is off.. now, it's available for galaxynote 8, note 5, note 4 and note 3. - while the screen is off, just remove the s pen and start writing a snote, without turning on or unlocking your device. - the s note will be saved automatically in samsung notes app when you plug your spen or turn off the screen. this app uses the device administrator permission.