For native ads we can choose to mute the ad by default when playing it.
mediaContent.videoController.mute(true)
Please offer it for all kinds of ads, especially full screen ads such as interstitial, rewarded and rewarded interstitial.
This can be a nice addition for apps that the user chose to mute in the settings, such as in games.
Also, for native ads, please also offer to mute/unmute even when isCustomControlsEnabled returns false because we can use native ads in full screen too, and we should be able to choose if we want to play the ads with sound or not when showing them.