Ok, I was searching through my build properties to see what all was different from my S4 & S3. I'm not rooted yet. Gonna play with stock for a week. I noticed that in ril.subscription.types it has NV,RUIM. Now, on the S3 we had to backup the nv after root to keep the important info. Do I need to do the same thing on my S4? I haven't seen any thread about it.