How to receive calls from both SIMs in Samsung Galaxy A7-2016(SM-A710FD)?

Dual SIM Always on which when activated activates call forwarding on the carrier's network.  

Navigate to Apps → Settings → Data usage → Smart Dual SIM → OK → Enter Numbers → NEXT → FINISH → OK 

Pictorial representation of the above settings is as follows:

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

b). Tap on Settings icon.

c). Select and tap on Data usage settings.

d). Select and tap on Smart dual SIM option.

e). Tap on Ok.

f). Enter both the SIM number.

g). Tap on Next.

h). Tap on Finish.

i). It will take few seconds to Update settings.

j). Tap on Ok.

CLICK HERE to know how to set Data roaming in Samsung Galaxy A7-2016 ( SM-A710FD ).