So… having secure SMS really isn’t hard. Onec upon a time you may have been forgiven to think that your SMS messages weren’t recorded forever byÂ telecommunicationsÂ companies or various government agencies, but those times have long passed. At the very least you should be concerned about somebody getting hold of your phone and going through all your SMSs (phones no longer just store 20 messages).
TextSecure (Free and Open Source Software up on github) does both local encryption (messages are encrypted on your phone) and over the wire encryption. That’s right kids – you can send encrypted text messages to each other.
It’s a drop-in replacement for the built in Android text messages application, so it all “just works”.