Virgin Mobile UK Pre-pay sim issues?

[Bossman]

Yes. I get the same message "hello there, it looks like you do not have enough credit to place this call" when the phone is off. And I call it from the USA. It used to usually go to VM. If the phone is on, it rings.

I only use the sim for data when I travel outside the US anyway. Because they charge the same for data, roaming or not.