The format of mobile phone number modified by Hunan health code is incorrect.

The format of Hunan Health Code changing the mobile phone number is wrong, and Hunan Health Code cannot directly change the mobile phone number. You can change the mobile phone number of health code by changing the mobile phone number of Alipay. Open Alipay app, click My Options at the bottom of Alipay page, click Settings in the upper right corner, then click Account and Security Options, click the mobile phone number function, select Modify mobile phone number, enter a new mobile phone number, and then click Next, enter the verification code, and the change will be successful.