SMS Blocker for iPhone is another highly efficient mobile app to block SMS on iPhone. It is a free text-blocking app that is available in 25 different languages from around the globe. This app blocks text messages from unwanted users. If you are tired of receiving scam messages from unreliable sources on your iPhone, you should immediately go to the app store and get the SMS Blocker app for free. This app is user-friendly. You will not have difficulty using the app.