From Aiko Solutions:
Erase data from your Smartphone. Wipe contacts, email, SMS, temporary files, browsing history, files and memory cards. The program employs different data sanitizing algorithms, including zero-filling, U.S. DoD 5220.22-M method, Bruce Schneier's algorithm, and Peter Gutmann's algorithm. Use wiping to eliminate traces of your everyday activity. Or if you want to sell or donate the smartphone - wipe it all clean to make sure it does not contain any data that could compromise you or your company.