HTC One X10 - Manual (Page 115)

Deleting messages and conversations
Open the Messages app and do any of the following:
To delete a Do these steps
Message Open the conversation thread with a contact, tap the message, and then tap Delete
message.
To delete multiple messages within a conversation, tap Delete messages
Delete by selection, and then select the messages to delete.
Conversation Press and hold a contact (or phone number), and then tap Delete.
To delete multiple conversations, tap Delete threads, and then select the
conversations to delete.
In the Messages settings, tap General Delete old messages to auto delete old messages.
Preventing a message from being deleted
You can lock a message to prevent it from being deleted even if you delete the other messages in the
conversation.
1. Open the Messages app.
2. Tap a contact (or phone number) to display the exchange of messages with that contact.
3. Tap the message that you want to lock.
4. Tap Lock message on the options menu. You'll then see a lock icon for locked messages.
115 Messages