http://abc3340.com/news/local/house-bill-would-put-porn-filters-on-cellphones

Your phone doesn't really belong to you, somewhere along the way you signed something that says your mobile carrier owns the phone. Don't believe it read your contract.

I hope you noticed that South Carolina and North Dakota have similar bills.  

They'll be taking porn out of our schools!!!  Geez!

It depends on how you bought your phone and whether it is locked or unlocked. And even if it is locked, to say that the carrier owns your phone is misleading, they can't come take it from you. If you have a locked phone they can prevent you from going to another carrier, but if you are with a major carrier that is signed up to the Consumer Code for Wireless Service, once specified contract conditions are met or a contract specified fee is paid you can ask the carrier to unlock the phone which allows you to move to a different carrier as long as they use the same network technology (CDMA, GSM, etc). Or you can just buy an unlocked phone and get a contract with the carrier of your choice.

These kinds of content laws don't fare too well in federal courts.  

If Euro claims something is true, my default position is that he is either lying or just wrong until proven otherwise.

As you said, all you need is to swap out SIM cards for as little as ten bucks or even less, and you are right in business in 30 seconds.