Ok, this is driving me crazy. The same thing happened on my Hero, so it's Sprint related. I am a homebody. I rarely leave my house. When I do, I'm never more than 3 miles from home. My entire surrounding area is in Sprints coverage area. Ninety-eight percent of the time I'm steadily on the 3G. Every now and then though, while still at home, my phone changes over to roaming for no rhyme or reason! I know Sprint won't throw a hissy fit over the calls and data (unless over the 300mb), but why is my phone doing this? I just checked my account and it says I've used 7760kb of data while roaming. Confused. Anyone else have this issue?