- Spam Defense (HD) is a SMS and Call filter application for blocking the Text Messages and Calls from the unwanted Numbers. - Supports the Vertical and Horizontal orientation of the mobile phone - Supports 1GHz or above processors. - Compatible with Android 2.2 (Froyo) and Android 2.3 (Gingerbread). - Can block any number of contacts saved on your phone. - Allows blacklisting of 10 unknown contacts and 10 text filters.