K Bao didn't send a short message to inform the postal service to open online banking.

If you choose the U-key authentication method, the dynamic verification code SMS will not be sent to your mobile phone. The authentication method can only be one of SMS authentication and U-key authentication (U-key has a preset transaction password, and you need to insert your U-key and enter the password to complete the transaction when using online banking, which is safer than receiving dynamic verification code through SMS).