Amazon’s Matter Casting is shaping up so nicely, I want to use it everywhere

Matter Casting is now rolling out to all Fire TVs on Fire OS 6 or higher. | Photo by Allison Johnson / The Verge If the Fire TV is your streaming stick of choice, I have good news. There’s now an easy way to cast content from your phone or tablet to your TV — as long as you’re watching Prime Video. Matter Casting, a new protocol for casting content from an app on your phone to an app on a TV or display, is rolling out now to compatible Fire TVs and could one day be available on