For more information, see <a href="http://en.wikipedia.org/wiki/Public-key_cryptography.Q:">http://en.wikipedia.org/wiki/Public-key_cryptography.Q:</a> How about messages already decrypted on my device, or other local settings?A: All local information, including sent and received messages, contacts and personal settings, are stored in a special encrypted database, and not in plain text for example in default shared preferences or SQLite databases.