Sony WH-1000XM4/S Help Manual page 32

You will hear the voice guidance say, "Bluetooth connected".
Hint
The operation above is an example. For more details, refer to the operating instructions supplied with the Android smartphone.
Note
When connecting, [WH-1000XM4], [LE_WH-1000XM4], or both may be displayed on the connecting device. When both or [WH-
1000XM4] is displayed, select [WH-1000XM4]; when [LE_WH-1000XM4] is displayed, select [LE_WH-1000XM4].
If the last-connected Bluetooth device is placed near the headset, the headset may connect automatically to the device by simply
turning on the headset. In that case, deactivate the Bluetooth function on the last-connected device or turn off the power.
If you cannot connect your smartphone to the headset, delete the headset pairing information on your smartphone and perform
the pairing again. As for the operations on your smartphone, refer to the operating instructions supplied with the smartphone.
Related Topic
How to make a wireless connection to Bluetooth devices
Pairing and connecting with an Android smartphone
Listening to music from a device via Bluetooth connection
Disconnecting Bluetooth connection (after use)
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