Because early versions lacked real-time WebSockets, users often refreshed the page manually to see new replies. Security Risks of Legacy Mobile Chatting
Facebook recognized this and launched and later m.facebook.com optimized for Opera Mini. This is where the concept of "chat" became seamless. facebook chat with opera mini verified
If your chat fails to load or you don’t see the "verified" status, try these fixes: Because early versions lacked real-time WebSockets