Method and system for rewarding ring back tone, donor platform, and custom ring back tone platform

The present disclosure describes a method for rewarding an RBT, including selecting an RBT and initiating an RBT reward via a third-party platform in which a donator exists; processing an RBT reward request from a third-party platform, and downloading the RBT selected by the donator to a customized RBT library of the rewarded party when a predetermine condition is met. The CRBT platform may also return reward result information (Successful or Failed) to the third-party platform; the third-party platform receives the reward result information and charges the donator for the rewarded RBT. If the donator is charged successfully, the rewarded party is notified that the rewarded RBT is received; if the donator is charged unsuccessfully, the downloaded RBT is deleted from the customized RBT library of the rewarded party. The disclosure further describes a device and a system for implementing the method.