HTC 10™ - Text Message Signature

  1. From a Home screen, navigate: Apps icon Apps icon > Messages Messages icon.
  2. If prompted to change SMS app, tap YES to confirm.
  3. Tap the Menu icon Menu icon (upper-right).
  4. Tap Settings.
  5. Tap General.
  6. From the Signature section, tap Use signature to turn on or off.
    Note On when a check mark is present.
    Note A signature is automatically attached to each sent text message when this setting is enabled.
  7. If enabled, do the following to edit the signature:
    1. Tap Signature.
    2. Enter the signature then tap OK.