In the [Add a device] window, select the Bluetooth headset you want to connect. You will geta [Connecting to device] notification. The above procedure is an example. For details, refer to the operating instructions supplied with your BLUETOOTH device. If you have previously connected the headset to this BLUETOOTH device, only an HFP/HSP BLUETOOTH connection may be made when the headset is turned on. If this happens, use the BLUETOOTH device and make an A2DP BLUETOOTH connection. If the headset detects a problem while charging due to following causes, the indicator (red) may turn off, although charging is not complete. In this case, charge again within the charging temperature range. If the problem persists, consult your nearest Sony dealer.

E.g. The WH-1000XM4 wireless Bluetooth headset immediately goes into pairing mode when used for the first time. However, the second time you pair it, you will have to press and hold the pairing mode button for 7 seconds. By holding an NFC-compatible device near to the N-Mark on the headphones, the headphones and mobile device pair and connect via Bluetooth. A device featuring the BLUETOOTH function is required to conform to the BLUETOOTH standard specified by Bluetooth SIG, Inc. and be authenticated. Even if the connected device conforms to the above mentioned BLUETOOTH standard, some devices may not be connected or work correctly, depending on the features or specifications of the device.If you experience discomfort after using the BLUETOOTH device, stop using the BLUETOOTH device immediately. Should any problem persist, consult your nearest Sony dealer. If the pairing information was deleted by initializing the headset, etc., delete from your iPhone the pairing information for the headset, and then pair them again. In [Settings]→ [Devices]→ [Bluetooth & other devices], make sure that the caption below [WH-1000XM4]says‘ Connected voice, music’. If this is the case, the headphones have been paired and connected successfully.

The above procedure is an example. For details, refer to the operating instructions supplied with your iPhone.When pairing with a BLUETOOTH device that cannot display a list of detected devices or that has no display, you may pair the device by setting both the headset and the BLUETOOTH device to pairing mode. At this time, if passkey is set other than “0000” on the BLUETOOTH device, pairing cannot be done with the headset. The above procedure is an example. For details, refer to the operating instructions supplied with your Android smartphone. If you have any questions or problems concerning this headset that are not covered in this manual, please consult your nearest Sony dealer.

NOTE: For how to enter the pairing mode onyour Bluetooth device, refer to the manual supplied with the product. Set the Bluetooth settings on your Android device to ON and delete the device information of the headphones or speaker. However, according to your headphones / speakers setup, you might not hear sound coming from the headphones/ speakersyet. If that's the case, go through the following additional steps below to set them as the default speakers. Bluetooth speakers and headphones have a pairing button.To activate pairing mode, press and hold the pairing button for several seconds Do not place this headset in a place exposed to humidity, dust, soot or steam, or subject to direct sunlight. Do not leave the headset in a car for a long time. It may cause a malfunction.

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The pairing procedure might be different for a device which has just been unboxed and a device which has already been paired before.

NOTE: If the device name is not displayed in the Bluetooth items, there is a possibility that the Bluetooth function is set to off. Set the Bluetooth function to on. For more information regarding Bluetooth connection with Walkman, Headphone, Computer or Sound Bar, refer to: The headset can be paired with up to 8 devices. If a new device is paired after 8 devices are already paired, the paired device with the oldest connection time is replaced by the new one. Once the computer detects the device, it will then automatically proceed to installing the driver, after which the device will be added to the computer's list of devices. When you listen to music from a computer on the headset, sound quality may be poor for the first few seconds after a connection is made. This is caused by the computer transmitting music at sound quality for communications at first, and it is not a malfunction.

Do not get the headset wet. If you touch the headset with wet hands, or put the headset in a damp article of clothing, the headset may get wet and this may cause a malfunction of the headset. Using the BLUETOOTH device may not function on mobile phones, depending on radio wave conditions and location where the device is being used. Ensure your device is not already connected to its last-connected Bluetooth device. Bluetooth devices can automatically connect with previously paired devices if Bluetooth is enabled and both devices are placed near each other. NOTE: If the device name is not displayed in the Bluetooth items, there is a possibility that the Bluetooth function is set to OFF. Set the Bluetooth function to ON.