June, 2006 — We have become aware of new types of scams involving mobile phones.
This is designed to provoke you to reply, which then triggers your opt-in of a subscription service (of one type or another), by considering your reply message as permission.
Example: Your plan is due for renewal! To upgrade your monthly member credit & bonus option or to optout call our customer care team on 1300xxxxxx.
This is designed for you to call the missed number, which is actually an expensive pay-per-minute service.