iPhone users normally look to erase their text messages when they need to sale their old iPhone. It is because they do not want their personal data to be read by other person or they do not want that their data may not go in wrong hands like cyber criminals or hackers. You must know that simple deleting the SMS does not really deleted the iPhone text messages from the iPhone permanently. So, in order to delete text messages permanently form the iPhone 6/6 plus/5C/5S/5/4/4S/3GS device you will need to opt for powerful permanently SMS eraser software. But before that let us know about where text messages get stored and why we need SMS eraser software to delete text messages.