https://www.theverge.com/2019/2/21/18235405/samsung-galaxy-phones-bixby-button-remapping-customization-feature

The Bixby button saga has been an ongoing blemish on an otherwise sterling smartphone record for Samsung since the release of the Galaxy S8 nearly two years ago. We’ve written endlessly about how the button is “structural bloatware” and a wildly unnecessary feature bolted onto a flagship phone, one that’s required lengthy explanations for how to disable it entirely or use third-party software to remap it to something you might find useful.

But with the new S10, announced yesterday, Samsung has finally included a built-in method for remapping the button to a command of your choosing. Even better: the company says it’s now extending that remapping capability to other flagship phones in the Galaxy line. That includes the S8 and S9 lines, as well as the Note 8 and Note 9.