I'm about to get the new iPhone 4, and I had a question about it. Is the sim card for it the same size as the sim cards for all the other phones? I had heard that the sim card for the iPhone 4 was smaller but I don't know that for sure. Thanks. I was wondering this because my brother has an upgrade today but he doesn't want a new phone so he let me have the upgrade and I need to know if my sim card will fit in it.