Erase/Delete Data on Dell Streak

The following steps will erase all the data including your Google account and downloaded applications from your device. Ensure that you back up all the required data before you proceed.

1. Touch the Home button,
2. Touch the Menu button. 
3. On the menu, touch Settings, 
4. Touch Privacy, 
5. Touch Factory data reset.
6. Touch Reset phone. You will need to draw your screen unlock pattern if it is enabled.
7. Touch Erase everything after you read the warning.