HBO Max will be available on an of devices, including phones, tablets, the internet, wired TVs, and consoles for gameplay. But at launch, two crucial streaming devices had no HBO Max apps. HBO Max was not supported by either Roku and Amazon Fire TV devices, although these devices represent the vast majority of US streaming devices.
Amazon.com Help: Watch Prime Video on Chromecast Select the Chromecast device you wish to use. Note: Your iOS or Android device must be connected to the same Wi-Fi network as your Chromecast. Please ensure that your Chromecast, whether standalone or built-in to another device, is up to date. Also ensure that your Prime Video app and iOS or Android device are also up to date. How to set up Chromecast for all platforms (Android and iOS) Jun 18, 2020 Casting Xfinity Stream Content to Chromecast Now Available
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Fix Chromecast Cannot Connect On iPhone ( No Device Available)
Turn on your TV and switch to the input for the Chromecast If you do not see the Chromecast home-screen, double check that it is plugged in to the proper HDMI port, and powered properly; If your Chromecast is successfully connected to a network, you should see the name of the network in the lower-left corner of the home-screen. Ex: 'Acme-Net 2.4' How to Setup Your New Chromecast Feb 05, 2019