A:AnswerYes, Chromecast needs to be connected to Wi-Fi to function both when casting or mirroring. If your downloaded content is not stored in a Chromecast-enabled app on your iPad, you can't cast the content to your TV. You can only mirror an Android-based device to your TV.
A:AnswerChromecast Ultra is a casting device that helps you share the content on you phone/tablet or computer with your TV. It doesn't have any pre-installed apps, and you can't install any apps. You can check out this help article to know more about Chromecast Ultra : https://support.google.com/chromecast/topic/7214311 and you can check out the partnering apps : https://store.google.com/us/product/chromecast_apps?hl=en-US
A:AnswerI always put the volume all the way up on my phone and adjust the volume from my receiver to where I want. If you're wanting bass you probably have better luck connecting the Chromecast directly in an hdmi port on the back of a receiver and adjusting the bass and treble from the receiver. I have noticed the sound quality was a bit better when streaming from an iPhone versus an android device.
A:AnswerYou can stream anything from your phone to the Chromecast. If you log into your sling TV app from your phone then mirror your device you can definitely watch sling tv on your television. Make sure your internet connection is at least 100mbps to avoid a lot of buffering and that the device you're streaming from isn't too outdated. My tablet buffers more often than when using my phone to stream.
A:AnswerChromecast plays the shows on your TV which supports casting, so your mobile becomes your remote to control the play, pause movies, music, etc. its different from how Roku works which comes with its own mini remote. The content from Chromecast is played on HDMI source, which is different from your Cable TV source. To control your Cable TV, you need to use the provided remote for cable tv.
A:AnswerIf it has the casting icon you should be able to watch any format if your casting device supports it (casting from phone/tablet to tv might have a few bugs)