1. First, enter the mobile phone system, find the Hangzhou Health Link APP, and click the Hangzhou Health Link icon to enter.
2. Enter the Hangzhou Healthlink APP and select the corresponding login method to log in to the account.
3. After successfully logging into the account, go to the homepage of Hangzhou Healthlink APP and click on my entrance in the lower right corner.
4. Go to My, find the settings, and click Settings to enter.
5. Enter the settings, find the account and security, and click the account and security to enter.
6. Enter the account number and security, find the modified mobile phone number below, and click the modified mobile phone number to enter.
7. Enter the new mobile phone number verification, enter the new mobile phone number and account login password, click below to get the verification code for verification, and modify it after verification.