Press and hold any message and the rest of the chat softly blurs, so the one you picked stands out. Above it are six quick reactions: ❤️ 😂 😮 😢 😡 👍. Below it is everything you can do.

• Reply: quote the message in your answer.
• Forward: send it to someone else.
• Copy: copy the text, ready to paste.
• Delete for me: remove it from your side of the chat.
• Unsend: remove your own message for both of you.
• More: including Report, for messages from other people.

On Android, the back button closes it, just as you’d expect.