Samsung Galaxy S® 4 - Record and Play File - Voice Recorder
From a Home screen, tap Apps (located in the lower-right).
These instructions apply to Standard mode only.
Tap Voice recorder.
Tap the Record icon (located at the bottom) to begin recording.
When finished, tap the Stop icon (located at the bottom) to discontinue recording and save the file.
Tap the appropriate sound file to play.
If necessary, press the Volume buttons (located on the left-edge of the device) up or down to adjust the volume.
To delete a sound file, touch and hold the file name, tap Delete then tap OK to confirm.