Keep important text messages by backing them up so you can restore them to the HTC Messages app, if needed.
The Messages app backs up either to the phone storage or to your storage card if you have one inserted.
Important: Text messages in the secure box and blocked messages will not be backed up. To include such messages to your backup, move them first to the general message box.
Home screen, swipe up and then find and tap
To help protect your data, set a password for your backup.
Be sure to remember this password. You'll need to enter it again when restoring messages.
If you don't need a password, select
Do not password protect this backup.
Enter a name for your backup file, and then tap