Was in New York for 5 days. Only used my Kindle in the hotel. Thought I was connected to their free WiFi. Got home to a bill of £36? Never used phone. Don't understand, can't email Virgin, tried a Web chat, but was told it wasn't their department?
Did you turn data roaming off? if not it will connect to 4g (or whatever) every chance it gets and will update things like gmail facebook etc
Didn't know I had roaming, or could switch it on or off. Virgin never seem to be available when you have a complaint. No email address????
Data roaming is built into all modern mobiles, it's really up to you to understand how your phone works