Mobile payment based on SMS mainly adopts the point-to-point short message mode, which is widely used in Europe and Asia.
① The user requests content services from the mobile payment platform in the form of short messages.
② After receiving the request, the mobile payment platform verifies the legitimacy of the user and the account balance. If it is legal, it requests the content from the value-added service provider. If it is not legal, it returns the corresponding error message.
③ After receiving the content request from the mobile payment platform, the value-added service provider verifies the legitimacy of the mobile payment platform. If it is legal, the value-added service provider sends the request content to the mobile payment platform. Otherwise, it returns the corresponding error message.
④ The mobile payment platform deducts the corresponding fee from the user’s account, and then forwards the received content to the user, and tells the user the payment result.
⑤ The mobile payment platform notifies the value-added service provider that the transfer is successful.
In the SMS system, the fee is deducted from the user’s phone bill, and the account processing is completed by the mobile payment platform. The bank does not participate. Therefore, the SMS system is only suitable for small-amount information services. The security of SMS mobile payment is mainly determined by the security of short messages. The advantage of this method is that it is low-cost and cost-saving, which meets the expectations of mobile phone users to enjoy high-quality services at a low cost.