Samsung Galaxy Grand Prime - Manual (Page 93)

Device & data manager
93
Performing a data reset
Delete all settings and data on the device. Before performing a factory data reset, ensure you
back up all important data stored on the device. Refer to
Backing up and restoring data for
more information.
On the Apps screen, tap Settings
→ Backup and reset → Factory data reset → Reset
device → Erase everything. The device automatically restarts.