Smart Sim Card Manager M51

[iamshahrushabh]

Guys, why is this used? 

[Itsdebby]

if u use dual sim it will help u to select as per ur requirement like if u want sim 1 for data and sim 2 for call

[Atifk]

If you use 2 sim in your phone then you can enable this option. This option is help you to receive calls from both sim's

[Ehsank · Accepted solution]

Smart Dual SIM enables call waiting on both the SIM cards. It even enables the call forwarding on both the numbers. So, if one of the numbers is out of reach, the incoming calls will be forwarded to other number.

[Abhishek13892 · Accepted solution]

If you enable it, you will be able to get call even you are another call in other no, it happens because call being forward from 1 to another, So some time it is usefule and sometime not