Sony h.ear on 3 Mini Wireless Help Manual page 87

Incoming call
Tap the touch sensor control panel twice quickly to answer a call.
During call
Tap the touch sensor control panel twice quickly to finish a call. (*)
*
Some devices may not support this function.
Note
If the C (custom) button is set as the Google Assistant button, the voice assist function (Google app) is not available.
If the C (custom) button is set as the Google Assistant button, it cannot be used to start up the voice dial function of the
smartphone/mobile phone, or activate Siri on the iPhone using the C (custom) button. When activating Siri, use the touch sensor
control panel.
If the C (custom) button is set as the Amazon Alexa button, the voice assist function (Google app) is not available.
If the C (custom) button is set as the Amazon Alexa button, it cannot be used to start up the voice dial function of the
smartphone/mobile phone, or activate Siri on the iPhone using the C (custom) button. When activating Siri, use the touch sensor
control panel.
Related Topic
Receiving a call
Making a call
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