My daughter has V550 on vodafone payg. Shes noticed her credit going down alarmingly recently without cause. We have sussed that one of her friends is sending her text messages via mms and each one has the paperclip symbol next to it. I think its downloading something which is costing her credit, is there a way to turn this off to save her ££. In settings i can only have auto/home or defer download? Any help appreciated.