At MWC 2019, Google announced that the Assistant button is coming to LG’s and Nokia’s entiree lineup of upcoming smartphones. This list of devices includes the LG G8 ThinQ, LG K40, LG K50, LG Q60, Nokia 3.2, and Nokia 4.2
Secondly, the Assistant will launch a walkie talkie mode when the button is long pressed. For the entire duration that the button is held down, the Assistant will continue to listen to queries. As Google states, this feature will be most useful when dictating long text messages or emails.
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