I have used 3 mobil phones and two are inflected with viruses.
my first phone k700i and it was inflected with the blue-bug worm.Then I had to refresh it's
firmware.fortunately I got the warranty. Believe me it's just a theme that I just added.
my second phone is Nokia 6600 and it's inflected with worm, I don't know how. It will
send MMS itself to other ppl. But this worked after software formatting.I didn't replace the
firmware in that case.
My third phone is simple Nokia c1 and it's working fine without any trouble.then I learned to
learn laptop for computing tasks and mobil phone for just talking. The real phone is moto
F1 like phone where it battery lasts for weeks and very good in signal too.
Virus as a biological virus needs a medium to spread.By definition virus spreads withing
the local-system and worm spread system to system. Worms are normally spread by exploiting
a vulnerability in the host operating system, since we rarely update the firmware in our
Mobil phones this is very critical than computing operating systems.
some phones like k700 have explicitly open to attacks like blue-bugging.
But pure logic or pure analog phones like moto F1 have less chances of become a zombie
to a malicious virus/worm. so better to use somewhat like that.
even if you don't believe , even GSM broadcast message can be a system specific configuration
code, and exploiting a buffer in that data file will make a door open to inject malicious
code to be executed in your phone. So it's not secure what you think.
that's how a buffer-overflow works.
read this-
http://en.wikipedia.org/wiki/Buffer_overflow
and buffer overflow is only just one class of attack, when it comes to web , GPRS , ,,,,etc and etc,
possibilities will grow exponentially. where you can easily see a mobil phone is a very easy
targert for malicious code.