Samsung Galaxy J3 V / J3 (2016) - Turn On Android™ Device Protection

Notes:

Android Device Protection (Kill Switch) prevents others from using your device if it's reset using the alternate reset method.
When enabled, your Google™ account ID and password are required to activate and set up the device after an alternate reset.
When a trusted reset is performed, device protection is not enabled.

To turn on device protection, add a Google account to the device.