Step 1. Go to your Samsung Infuse 4G Home screen.
Step 2. Tap .
Step 3. Tap Settings.
Step 4. Tap Privacy.
Step 5. Tap Factory data reset.
Step 6. Tap Reset phone.
Step 7. At the confirmation screen, tap Erase everything.
Step 8. Your Samsung Infuse 4G will reset to the factory default settings automatically and when finished, displays the Home screen.
Note: Performing a Factory data reset will erase all data from your Samsung Infuse 4G and internal SD card, including your Google account, system and application data and settings, and downloaded applications.