You may want to learn how to hard reset Samsung Galaxy Nexus if you wish to set the phone back to factory default settings. You can accomplish this with the following steps.
1. Open the Settings app.
2. Select the Backup & reset option.
3. Select Factory data reset.
4. If you wish to erase SD card data like music and pictures, tap the Erase SD card box. Select Reset phone.
5. Select Erase everything.
You have completed the steps for how to hard reset Samsung Galaxy Nexus. The process may take a few minutes to complete. When it does, the phone will restart in a factory default state.