How to enable Smart Dual SIM in Samsung REX 90(GT-S5292)?

Click here to know about Dual SIM Manager in Samsung REX 90.

a). Tap on Menu as shown below.

b). Now, Tap on Settings.

c). Under settings, Tap on SIM Card Management.

d). Under SIM Card management, Tap on Smart Dual SIM as shown below.

e). Smart Dual SIM window will appear. Tap All.

f). Once all connections are selected. Tap Save.

g). Now, you need to type the number specific to the SIM Card in the box as shown below.

h). Perform the above step for both the SIM Cards. Once Done, Tap Save.

i). Requesting window will appear as shown below.Please wait for some time.

j). A window as shown below will get opened. Tap Ok.