Pairing Cannot Be Done - Sony WH-CH520 Quick Start Manual

Help Guide
Wireless Stereo Headset
WH-CH520

Pairing cannot be done.

Bring the headset and the Bluetooth device within 1 m (3.2 ft) from each other.
When pairing a device for the first time after purchase or after initializing or repairing the headset, turn on the headset
and the headset automatically enters pairing mode.
To pair a second or subsequent device, press and hold the
seconds or more to enter pairing mode.
When pairing a device once again after initializing or repairing the headset, you may be unable to pair the device if it
retains pairing information for the headset (iPhone or other device). In this case, delete the pairing information for the
headset from the device and pair them again.
Restart the connected device such as a smartphone or a computer you use, and pair the headset and the device
again.
Reset the headset.
Initialize the headset, and pair the headset and the device again.
Related Topic
How to make a wireless connection to Bluetooth devices
Resetting the headset
Initializing the headset to restore factory settings
5-044-178-11(1) Copyright 2023 Sony Corporation
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(Bluetooth) button on the headset for about 5