Setup mobile device on GSM MultiSIM configuration

a)  Dial the following string to set the device as Phone #1.

* 1 3 6 #

b) Set the device as phone #2:

* 1 3 6 * * * 2 #

c) Set the device as phone #3:

 * 1 3 6 * * * 3 #

 d) Query status of device:

* 1 3 7 #