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Starting today, you’ll be able to use Chat Mentions on both iOS and Android. Just like web, when you mention someone in chat, that name will be bolded in the mentioned user’s selected chat color.
To mention someone, type @ or tap on a username within the chat window. From there, you can choose to mention (happy face) or ignore a user (sad face). If you’re the moderator of a channel, you’ll also see options to time-out or ban someone. Note: You can still moderate using the viewer list.