Why are there paid short messages from Fetion Group?

Mobile users are sent to Unicom and telecom users according to the standard fee.

A paid short message means that there are telecom and Unicom users among the friends who send the group.

Fetion is an integrated communication service of China Mobile, which integrates voice (IVR), GPRS, SMS and other communication modes, covering three different forms of customer communication needs (full real-time voice service, quasi-real-time text and small data communication service, and non-real-time communication service), and realizes seamless communication service among Internet, mobile Internet and mobile network.