There was a wide range of mobile browsers. From what I recall Windows Mobile 5/6 smart phone’s browsers were arguably better than the 1st gen iPhone. Though the phones where overall worse.
This is 5: https://en.wikipedia.org/wiki/Windows_Mobile?useskin=vector#...
this is 6: https://en.wikipedia.org/wiki/Windows_Mobile_6.0?useskin=vec...
Devices were much worse compared to even first gen iPhone. Ironically, it only for worse because the industry decided that using their shitty resistive touchscreen with UI even worse than previous models - menus had large buttons, but apps were built for stylus.
The browser’s UI was also worse thus the ambiguity.
Yeah, it could render more, but it was unusable because no one designed for mobile back then. IMO mobile world was sad until Apple came in.