ContributionsMost RecentMost LikesSolutionsRe: SCAM CALLS ever since moving to O2 network!!! I've had exactly the same issue. Virgin Mobile SIM for many years and counted the number of spam calls on one hand. Since moving to O2 SIM I now get around 5 spam calls a WEEK. I don't answer them and continuously block them (after googling the numbers on who called me)