A:Answer Hi cj,
Thank you for your inquiry! By linking the TV with your smart speaker supported Amazon Alexa or Google Assistant, you can control the TV by voice. The Amazon Alexa app runs on Alexa-enabled devices. It is voice-driven which allows you to control functions on your Android TV device, such as turn on or off, change channels, control volume, and more. Please check this link with information of supported TV functions and commands:
https://www.sony.com/electronics/support/televisions-projectors-lcd-tvs-android-/xr-65x90k/articles/00178845
With the BRAVIA XR X90K Full Array LED TV everything you watch becomes more detailed and immersive with true-to-life 4K picture, powered by the Cognitive Processor XR™. With immersive picture and sound, and sleek flush bezel design, be prepared to level up your favorite movies, TV shows, and games. Hope this helps! - Kris