Modify the mobile phone number of WeChat Health Card as follows: 1. Open wechat > me > payment. 2. Click Medical Health. 3. Click on the electronic health card. 4. Enter my electronic health card. 5. Click Security Settings. 6. Click on Personal Information. 7. Enter a new mobile phone number, and then click Save.
The number used in China is 1 1, in which each segment has a different coding direction:1-3-network identification number; 4th-7th digits-area code; Number 8- 1 1- user number. This number is the so-called MDN number, that is, the number that the calling user needs to dial when calling the mobile user of this network, and it adopts E. 164 coding mode; Stored in HLR and VLR, and transmitted on the map interface.