Samsung Galaxy S7 edge User Manual page 301

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Performing a factory data reset erases all data on the phone. It is recommended that you back up
important data before performing a factory data reset.
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Erased information cannot be restored. Only erase data after you are sure you have saved
everything you need.
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.
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If you are performing a Factory data reset, follow the prompts to confirm the data removal.
The phone will erase all data and reboot.
Personal Settings
> Settings > Backup and Reset .
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