Boosting battery performance
Turn on the airplane mode.
When the airplane mode is on, the Wi-Fi, Bluetooth, and NFC functions are deactivated.
Press and hold the power button.
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Tap [Airplane mode].
If you use your Walkman with the airplane mode off, deactivating the Wi-Fi and Bluetooth functions when not using those will make the battery last longer.
You can also save power in the following ways as well to make the battery last longer.
Lower the brightness of the screen.
Shorten the time before the screen is turned off.
Deactivate the GPS function when not in use.
Turn off the screen when you are not using your Walkman.
Turn off the power when you will not be using your Walkman for a long time.