https://consumerist.com/2017/09/18/samsung-allows-customers-to-disable-bixby-leaves-them-with-worthless-button/

Samsung’s answer to Siri, Alexa, and Cortana could soon be homeless: While the company continues to work on a smart speaker to house Bixby, it’s allowing customers to evict the artificially intelligent assistant from its dedicated button on their smartphones. 

Months after Samsung debuted Bixby in its Galaxy S8 and Note 8 smartphones, the company is finally letting users disable the dedicated button used to summon the assistant.