Sometimes the unexpected happens and software can be corrupted or give you a lot of errors. In this case, what you would want to do is called a master reset, or Factory data reset.
Use Factory data reset to return your Samsung Fascinate to its factory defaults. This setting erases all data from your Samsung Fascinate, including your Google or other email account settings, system and application data and settings, and downloaded applications.
Factory reset will not erase current system software and bundled applications, or files stored on an optional installed memory card, such as music or photos.To reset Samsung Fascinate, do the following steps:
Step 1. From the Home screen, touch Menu.
Step 2. Select Settings then select Privacy.
Step 3. Touch Factory data reset.
Step 4. Follow the prompts to perform the reset.
That’s it! Do remember to back up the important data on your Samsung Fascinate before the reset!