That's interesting, because that's not exactly what the Chinese text says. It just says vendors need to implement 5G standards.
The reddit translation interprets "relevant industry standards for 5G messages" as including RCS. I'm unfamiliar with this, but apparently GSMA claims that "the 5G standards mandate the implementation of RCS in 5G networks and devices". ( https://www.gsma.com/solutions-and-impact/technologies/netwo... )
So if I'm reading this correctly, any vendor who claims to have 5G support needs to implement RCS?
Unfortunately I can’t read the original text myself but the machine translation I looked at used the phrase “5G messages” so I interpreted what the Redditor was doing as providing clarification as to what that is in context (“RCS”). Per the document you pulled up, I can see why it would just be called 5G Messaging or something like that, not technically true, but may as well be true as I didn’t realize the GSMA had also mandated it for what they’re calling their “Universal Profile”.
> Operators are free to decide whether or not to implement RCS within their 4G networks. However, the 5G standards mandate the implementation of RCS in 5G networks and devices.
Given this, I'm amazed it took a roundabout detour into Chinese mobile phone regulations to arrive at the conclusion that apparently GSMA mandated RCS for 5G...
The original article is a PRC government document in Chinese so this is the relevant translation.