Phone Mobile network not found after installing Android 4.1.2 by dhacker29

I just flash the Aurora 4.1.2 ROM by dhacker29 to my Nokia X.

Everything seems to work fine except for mobile network. My SIM cards are not recognised so I can't make or receive calls.

All other connectivity (Wi-FI and bluetooth) appears to work fine. What could be the issue? I am using the build with software navigation.

Edit: Found it. I had to configure subscription first. Well that's not so obvious is it?