12306 Does SMS authentication cost money?

Whether it costs money to send verification code by mobile phone depends on the cooperation between the operator of the number used and SP manufacturer. Some users need to spend 0. 10-0. 15 yuan to get the verification code, while others can get the verification code for free. For example, there is no charge for logging in to the mobile network business hall with the mobile phone number and obtaining the information sent by the verification code. Use the mobile phone number to obtain short messages sent by the verification code outside the network, and charge 0. 10-0. 15 yuan/message.