Samsung's new Galaxy S10 series is the company's third lineup of flagship phones to come with Bixby built-in. But the phones will be the first to let you actually change what that Bixby button does, addressing what has long been one of Samsung's most frustrating features. The company confirmed the change in a blog post, noting that the S10 will be the first of Samsung's phones to have "Bixby Key Customization," which lets users change their Bixby settings so that pressing the Bixby button once or twice will launch a third-party app of their choice. Samsung also said it would extend the feature to its earlier phones with Bixby, including the S8, S9, and Note9, in a future software update. SEE ALSO: Why won't Samsung let us see its foldable phone?