1. First Download KingRoot Apk From Here.
Link 1#
Link 2#
2. After Rooting install Xposes Framework From Here.
Link 1#
Link 2#
3. Now after installing the Xposed module you need a cool Xposed module that will allow you to Edit the number of your SIM card and the module that you will be downloading is SIMEditor.
Download Sim Editor From Below Link
Link #1
Link #2
4. Now install the app and then in Xposed
module this app and after that you need
to reboot your android device for the
proper working of the module in your
device.
5. Now launch the app and you will see
the number changing option where you
need to enter the number that you want to set on your SIM card.
That's it