Samsung Galaxy Prevail LTE User Manual page 349

Access Backup and Reset Options
1. From home, tap Apps
 The Backup and reset menu opens.
2. Set options.
 The backup and reset settings are applied and saved.
If you are performing a Factory data reset, follow the prompts to confirm the data removal.

The phone will erase all data and reboot.
Settings
> Settings > Backup and reset.
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