Ahh, you most be talking about dumb / feature phones, I guess? I remember a lot of people who had smartphones early on getting / sending emails on their Symbian devices or Windows Mobile devices. In around 2003 (years prior to the iPhone launch), Windows Mobile actually had something like a quarter of the smartphone market. So, in terms of smartphones, it was sizable. But, a lot of people didn’t have smartphones at the time, so that whole market was niche in a way. Most of the market at that time was Symbian and then there was also PalmOS.

I still kinda wish smartphones now had the option to work more like those old ones. They were much less locked down. It’s fine for the vendor to offer a store, but the early phones would just let me install apps any way I wanted. Hell, you could buy some PalmOS apps at physical retailers!