What is the English for micro-signal?

The English for micro-signal is WeChat.

Example:

Wechat is the account used when logging in to Wechat. You can send voice messages, videos, pictures and texts free of charge through the mobile network, and you can chat alone or in groups.

Micro-signal is the account used when logging in to WeChat. You can send voice messages, videos, pictures and texts free of charge through the mobile phone network, and you can chat alone or in groups.

Binding:

Micro-signal can bind QQ number and mobile phone number. After the binding is successful, WeChat can use QQ related services to send a friend reminder to join WeChat by querying the address book.