Voice input will work across various services and replaces pretty much anything you can physically do with the Roku remote.

Google has acknowledged a widespread bug affecting voice commands for smart lights, and promised to share an update soon.

Photo: Google Smart speakers from Google, Apple, and Amazon will by default listen out for voice commands, enabling you to get the weather forecast or turn off your smart lights with a voice command.

Siri, Apple's voice assistant, combines advanced AI, machine learning, and voice recognition to interpret and respond to user queries and commands.