When installing a digital certificate, the mobile phone can't receive the short message to get the verification code. What's the problem?

If your mobile phone can't receive the verification code temporarily due to busy network, please try again later, or you can call Tenpay hotline: 0755-860 13860 and press "0" to handle it manually for you. In the process of obtaining the verification code, you may hear the following error message: Error message 1: Your calling number is incorrect, so you can't obtain the verification code for the time being. Please dial with the correct mobile phone. Explanation: reporting an error means that you are using a non-mobile phone (landline, PHS, VoIP, etc.). ) come and call. Solution: Please use the mobile phone that needs to get the verification code to make a call, so as to get the verification code correctly. Error message 2: The verification code you inquired does not exist or has expired. Please don't hang up, please click the "resend" button on the relevant web page and make further inquiry. Explanation: Reporting this error means using the wrong mobile phone to make a call, or the mobile phone verification code sent to you has expired. Solution: Please make sure that the mobile phone you dialed is the one you need to obtain the verification code. Confirm that the mobile phone number is correct, which means that the verification code sent to you has expired. Please don't hang up at this time. Please click the "resend" button on the relevant webpage, and then select "Re-obtain verification code" according to the voice prompt.