[8notime]

I'm not sure what they call it, all I know is that once I got to Canada the warning popped up every 5 seconds and my roaming triangle came on. Switching the setting to Home Only caused me to have no service at all (that's one of the things I tried). In Seattle I remember this happening less frequently when I went into a parking garage or something. The roaming triangle didn't come on but I assumed it was picking up a Sprint tower in that situation. In Canada I'm probably roaming and in Seattle I was probably picking up their extended network. I agree, if you don't travel outside the US, or go into an extended coverage area, you probably won't care about this too much. Unfortunately I do both.