Sanyo Katana - Manual (Page 91)

Section 1C: Setting Your Phone’s Security 78
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Resetting Default Settings
Resetting the default settings restores all the factory
defaults, including the ringer types and display settings. The
Contacts, Call History, Calendar, and Messaging are not
affected.
To reset default settings:
1. Press > Settings > Security, and then enter your
lock code. (The Security menu is displayed.)
2. Select Erase/Reset > Default Settings. (A disclaimer
appears.)
3. Read the disclaimer and press OK (left softkey).
4. If you are certain that you would like to restore all the
factory settings, select Yes.