Samsung on Wednesday said that Bixby Voice will not be operational when its Galaxy S8 and S8+ smartphones hit the market. Some Bixby features — Vision, Home and Reminder — will be active when the phones become available on April 21, Samsung said, but the Bixby Voice capability won’t show up until later this spring. The delay may be due to a weakness in Bixby’s English language chops. It’s also possible that Samsung wants to round up more third-party apps. Whatever the reason, its decision to delay the feature likely is prudent.