It was atrocious to developers. I looked at it just a bit myself, decided not to go there at all; I knew many Symbian developers and they said they'd generally

It was atrocious to developers. I looked at it just a bit myself, decided not to go there at all; I knew many Symbian developers and they said they'd generally prefer contracting syphilis to contracting Symbian. Symbian was and probably still is the best phone platform, and the usability of most important phone functions (just making phone calls, and also things like what the phone does with alarm clock during call / when phone is switched off, or what it does when you get a text message during a call, etc) was very well designed. But Nokia leadership just wanted to keep doing what was selling so well (keyboard phones) so touchscreen development was ignored. The horrible complexity of Symbian app development was the other big issue.