Sony WH-CH720N Help Manual page 85

If the function when you press and hold the
of the smartphone/mobile phone. The voice assist function (Google app, Siri) is also not available.
If the function when you press and hold the
the smartphone/mobile phone. The voice assist function (Google app, Siri) is also not available.
Related Topic
Receiving a call
Making a call
(call) button is set to [Google Assistant], you cannot start up the voice dial function
(call) button is set to [Amazon Alexa], you cannot start up the voice dial function of
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