I tried to make my first phone call and the phone highlights that warning your roaming. But I'm not.

[dunsany]

I just recently joined 48. When I try to make a phone call it tells me that I'm roaming?? Bit I'm at home.haven't left the country since I set up with 48.

[dalyer]

48 is an MVNO operating on the O2 network so the phone thinks that you are roaming even when you're not.

http://en.wikipedia.org/wiki/Mobile_virtual_network_operator

You need data roaming enabled for the phone to work on 48.

It doesn't cause any problem or involve any additional cost.

If your calls are working OK then forget about it.

Hope this helps.