How to Get a Signature When Texting From iPhone
Some iPhone users may wish to make their text messages more personal or more recognizable by using a text messaging signature. You can easily create a personal text message signature for your iPhone, which will then be added automatically to your outgoing texts. Creating a signature takes only a few moments and it can be done through the Settings menu on the iPhone.
Power on your iPhone and wait for the home screen to load fully.
Touch the "Settings" icon on the iPhone's home screen. The Settings menu will display.
Touch the "Messages" option in the Settings menu to open the Messaging Options menu.
Touch "Signature" in the Messaging Options menu. The keyboard will appear, along with the current message you are using, if any.
Type the message that you want to use as your signature on the iPhone keypad. You can change and edit the signature whenever you like.
Touch "Save" to save the signature you have created. You will be returned to the Messaging Options screen.
Touch "Done" in the Messaging Options screen. Your text signature will now be attached to each of your outgoing text messages.