Well, certainly you are less free in terms of software freedom, symbian is
proprietary from Nokia and it only supports a handful of applications (most
of which are proprietary anyway).
In terms of my question, I feel inclined that they are both the same, with
the smarpthone being a little bit better... Depending on the internal build
of each smartphone.
I remember a couple of articles about how easy the exploitation of GSM
cards/networks is. So, I feel the older models (which were built back when
people thought those things were secure) will be probably easy to exploit.
Not only that, but the fact that several law enforcement agencies have long
used phone spy to track criminals, makes it very apparent that phones are NOT
secure. So, maybe the new smartphone thing has a few advantages, if the OS
can indeed control the GPS and the micro, it might be able to interfere with
the spy. But again it will depend on the internal build.
As for old models, maybe there are some that are hard to exploit, not on
purpose by the maker but on "accident" they made it like that, but we are
hardly in the know of which models to use. And even so, the fact that we
can't flash the firmware running inside makes it hard to trust the device.
A good source would be Jacob Appelbaum, since he has dealt with that kind of
stuff for a long time now. But in his talks usually he mentions how the spy
occurs, it's rare to listen him giving solutions, I think it's because apart
from the software part, we don't have many solutions.
Damn, I just want a phone that can be trusted not to be a listening device. I
know they have geo-location of me, it's necessary for the phone to work, I
accept that, but I want it NOT to listen to me. :(