Sony WALKMAN NW-WS623 Help Manual page 79

Depending on the smartphone that you are using, you may not be able to play the music with the Walkman. In this case, play the
music by operating the smartphone.
When the Walkman is in the Headphone mode, you cannot perform the following operations.
Skipping to the previous or next unit (folder/playlist/album).
Changing the playback mode (Repeat/Shuffle).
Changing the playback range (folder/playlist/album).
The contents of the Help Guide may be subject to change without notice due to updates to the product's specifications.
Related Topic
One-touch connections with a smartphone (NFC)
Connecting the Walkman to an unpaired Android smartphone for the first time
Connecting the Walkman to an unpaired iPhone for the first time
Connecting the Walkman to a paired smartphone
Selecting the wireless playback quality
Notes on the Bluetooth function
Confirming the status from the OPR lamp
Selecting the Walkman or a smartphone as the sound source
Using the Remote Commander
4-688-892-12(1) Copyright 2017 Sony Corporation
79