True, but with that logic ALL smartphones are disappointments and not that great since they never really fully replace dedicated units of anything they "simulate". i.e. camera, camcorder, music player, alarm, radio, weather channel, calculator etc. Some of those are obvious but the list goes on forever. Just saying.
I think Nokia has been pushing their navigation offerings a lot, and that it really should have something close to feature parity with my 2006 TomTom. Similarly, playing up the camera so much caused the 920 to "flop", even though it still takes fantastic, ground-breaking shots. Never said it was a proper disappointment, just not all that great :]
I disagree with your list.
- Cameraphones these days do take decent pictures compared to 2006 camera offerings (obviously not the highest end, but I think my point still stands).
- I think modern audio playback offers a better experience than an old portable CD player, especially through digital advantages such as streaming.
- My phone's a better alarm than my alarm clock - I can set several alarms, I choose the sound, etc.
- Phones can be portable radios without a silly antenna.
- Weather can be delivered in a far more concise and accessible manner through weather apps than through a channel.
- Calculators benefit from physical buttons, and really don't need to be enhanced that far. That said, you could have a far better UI - easy way to store and access values, better navigation within graphs, etc.