How to Scan device for threats in Samsung Galaxy A7-2016(SM-A710FD)?

Some apps can harm you or your device. To avoid harmful apps Scan your device periodically.  

Navigate to Apps → Smart Manager → Device Security → Agree → Scan Device → Scanning starts

Pictorial representation of the above settings is as follows:

a). Tap on Apps icon from the Home screen.

b). Tap on Smart manager icon.

c). Select and tap on Device security option.

d). Read the terms and conditions and tap on Agree.

e). Tap on Scan device.

f). It will start Scanning the device for any threats.