How to use Iphone after changed to an LGtouch? Sim card change question?

I put my LG sim card in the iphone, and everything worked, internet youtube, etc.

Am I going to be charged by the amount of internet use with my LG sim?How to use Iphone after changed to an LGtouch? Sim card change question?
You should make sure you have the data plan in the iPhone because I think the internet in the iphone still works even if you don't have the data plan. And if you don't have the data plan make sure you add because you don't want to end up paying thousands of dollar on the Internet. That's what happened to me I didn't have the data plan and I used the Internet for a few days then I received a text saying that I needed a data plan. Then I called and they told me I owed $12,000 worth of Internet. But I dealed with them and didn't pay all of that because it was the apple stores fault. So be careful!!!!!!How to use Iphone after changed to an LGtouch? Sim card change question?
yes you are if you using the networks internet. but you wont if your using wifi.