iMessage

Which iPhone do you have and which iOS version is installed on it?

The Reply to a Specific Message works with iOS 14 or later iOS versions.

How to reply to a specific message

1. Open a Messages conversation.
2. Touch and hold a message bubble, then tap the Reply button .
3. Type your message, then tap the Send button .

You can reply to a specific message in conversations with one person and in groups.

  Axel F.

One thing to note and that is that Replying to a Specific Message only works with messages that are sent/received with iMessages and not SMS messages. Are you certain that you are attempting to reply to a specific message with a contact that is using iMessages?

Axel F.

Are you able to Touch & Hold the specific message bubble and does an alternate menu pop up at all?

Axel F.