Ref: Verzion Wireless Samsung Illusion, Samsung SCH-I110, factory default settings,to erase data from SD card,
Tips & tricks for Verizon Samsung Illusion:
if you want to give away the new Verizon Samsung Illusion to a friend or re-sell it to some one else, you may want to reset the the Samsung Illusion to its factory default settings.
Steps to reset:
From the Home screen, press the Menu Key, ➔ touch Settings ➔ Privacy.
Touch Factory data reset, then follow the prompts to perform the reset your phone.
Please notes that This setting erases all data from your phone’s memory, including your Google or other email account settings, system and application data and settings, and downloaded applications.
if you want to erase all data from an installed SD card during the Factory data reset, select the Format USB storage option.