Hello. I just got my very first iPhone so i'm still learning about activation and stuff. Heck, its my first smartphone. So take it easy on me. Whenever i try to use the 3G on it, it says that i need to turn on Data Roaming. I have unlimited data and i'm at home. I have no idea what's going on. The status bar says "Sprint" and i see the 4 bars of signal strength. So i assume the iPhone is activated. I dont know what's going on. Should i try restoring?