Samsung GALAXY S8 User Manual page 129

Note: To reply to a text message with a multimedia
message, open the text message, and then tap either
Menu > Add subject or Attach. The text message is
automatically converted into a multimedia message.
Protect (Lock) a Message
You can lock a message so that it will not be deleted
even if you delete the other messages in the
conversation.
1. From home, swipe up to access Apps.
2. Tap Messages.
3. On the Messages screen, tap a conversation.
4. Touch and hold the message that you want to lock.
5. Tap Lock on the options menu. A lock icon is
displayed at the right hand side of the message.
Apps
Delete Conversations
1. From home, swipe up to access Apps.
2. Tap Messages.
3. Touch and hold a conversation to select it.
Tap additional conversations to be deleted.
•
4. Tap Delete and then tap Delete to confirm. Any
locked messages will not be deleted.
Tip: You can also delete a conversation while you are
viewing it. While viewing a conversation, tap
Delete, and then tap Delete to confirm. If there are any
locked messages in the conversation, you will be asked
if you want to delete protected messages.
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