For standard-billed sessions, the end-user's mobile handset is charged directly, while for all reverse-billed clients, each USSD session is charged by the specific MNO and billed based on the session length. Note that MNOs can have different session lengths and maximum durations, but they typically charge for every 20 seconds of the end-user's utilization. All MNO costs incurred by reversed-billed clients will be billed directly to the clients via the MNO or passed on by Clickatell.

Please contact our Support Team for more information about specific MNO costs.

Also see:

• How do I pay for USSD sessions?