Factory Data Reset - Samsung Galaxy J1 User Manual

Factory Data Reset

Return your device to its factory defaults.
Warning: This action permanently erases ALL data from the device,
including Google or other account settings, system and application
data and settings, downloaded applications, as well as your music,
photos, videos, and other files.
1. From a Home screen, tap
2. Tap Backup and reset > Factory data reset.
Tap Reset device and follow the prompts to perform the reset.
3.
Settings
Apps > Settings.
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Backup and Reset