The popularity of the service is based on its simplicity of getting the service and a subscribers’ love to the information about money spent (balance inquiry still is the most popular service).
Where's the Money? service provides an opportunity to view information about the last 5 actions taken with a phone number.
A subscriber can make a one-time request for the last 5 actions or once signing up for periodic service. As a result, a subscriber will be receiving SMS with the latest paid action info (call, SMS or data transfer) each time after payment.