Hi. New to 3 network, Samsumg Galaxy Spica phone, Android OS and this forum. Am computer savvy but this is my first smartphone which I've had for a day. I live in Limerick, Ireland. Just noticed today that the connection icon is now the roaming one i.e. bars with a capital "R" in them. Yesterday in the same location (my house) I definitely didn't get the roaming icon and think I got the HSDPA one i.e. bars with a capital "H". In Mobile Network Settings/Data roaming I have selected "Disable". I also have wifi enabled and it has picked up the DSL wireless network in the house. Can someone explain how this works? Like, if I have data roaming disabled what exactly does that mean? At the risk of sounding pedantic I have a few specific questions: With data roaming disabled, wifi enabled and the roaming icon displaying, does that *guarantee* that any data flowing in/out of the phone is thru the wifi? Is there a way to turn off the voice/sms side of things so they can't roam either? Does anyone know if roaming on the three network in Ireland is free or if not, how much it costs? Is there any config that can be done to connect to a different APN (not even sure what that means) to avoid roaming? Any theories on why i get the roaming tonight even though location of phone hasn't changed? Any suggestions on where to start reading about the technical details of what's happening under the hood so to speak? I understand software/OS etc. on a pc and get that the phone is the same concept but would like to get to exactly what determines what icons I see. Just looked at About phone/Status and among other settings it says: Network = 3 Signal strength = -81 dBm 16 asu Mobile network type = GPRS Service state = In service Roaming = roaming Mobile network state = Disconnected Can anyone explain what roaming on a GPRS mobile network type means? Thanks folks.