The bound mobile phone number needs to be changed and bound on the platform originally authorized to bind the mobile phone number (that is, the mobile phone number bound on WeChat needs to be changed and bound on Alipay).
The specific method of changing a tie is as follows:
Wechat users can click the mobile phone number with the "Edit" icon in the "Health Treasure" and "Personal Center" on the WeChat side, and a mobile phone number binding pop-up window will appear in the interface. If the mobile phone number bound to WeChat platform is your common mobile phone number, you can click "Allow" directly.
If it is not your usual mobile phone number, please click "Use other mobile phone number" to add your usual mobile phone number for authorization.