Wrong, that runs Nokia's S40 OS which is actually a basic dumbphone system.
Nokia was very slow to respond to iOS and Android regardless of how prevalent Symbian was before those though. Symbian was very primitive compared to iOS and Android so once they hit the scene and Nokia spent the next few years after still making crappy Symbian phones, they did indeed lose out on marketshare in smartphone markets, and for good reason.
Wrong.
Symbian is actually very advanced and function rich OS. There were couple of problems though. It was hard to code for and the UI is just HORRIBLE!
However, there is no denying, the first smartphone was made by Nokia, it was the N95. When it came out it, it just blew away everything and had absolutely no competition, there was nothing like that before it, it was advertised as a computer in your pocket. It also had technologies in it that were no present in phones before, like a GPS chip.
Nokia's problem was that, in 2007, a certain company that revolutionized and basically invented the home computing industry got interested and got into the smartphone game. This was not Siemens, Phillips or even Samsung that Nokia could deal with, this was a true visionary leader and a big player.
Nokia was totally unprepared and not ready, they got caught HARD by the touchscreen revolution, they refused to believe it and kept going with their previous plan of releasing dual slider phones, in 2008 they released the N85 and the N96.
In 2009, when the iPhone and now Android started to pick up they scrambled, quickly "adapted" Symbian, which was not touch friendly at all and released a touchscreen failure known as the N97 and a cameraphone dual slider N86 8MP, which was actually a very good phone and contained all the improvements and fixes from the N95, N85, N82 and N96. N86 is the last, best dual slider phone.
They still fully did not believe in touchscreen; not only was the N97 absolutely horrible on specs, with a bad camera and a HORRIBLE OS but the screen was resistive, instead of capacitive.
In 2010, they learned some more lessons and released a camera centric phone, with now a capacitive screen - the Nokia N8, which again, came with Symbian, albeit a bit improved, however still a far cry from iOS and Android and relatively weak specs, especially the RAM, which there was not enough of. The only saving grace of that phone was a superb camera, which to this day is still probably(maybe the S4 finally beats it) a #2 camera after the 808 PureView.
You pretty much should know the rest... couple of years ago, a prototype leaked on to the web through an ebay sale, of what was supposed to be the N98, a dual slider phone with a 12MP camera and a xenon flash... the same one as on the N8. Which goes to show you just how unprepared Nokia was for the touchscreen, they had plans to keep releasing dual slider phones all the way up to 2010, and maybe if not for Apple, we'd still be using dual sliders.
The next is Symbian. Nokia was never good with software, and as I mentioned before, Nokia could get away with Siemens, Philips and others but with Apple and Google, they simply could not compete on software and even hardware. Nokia's software team could be described as simply terrible. It may sound harsh, but if you've ever used Symbian on a touchscreen, you'll agree. Though functionally(not UI, just what the OS can do), Symbian had more functions than iOS and Android all the way up to probably 2010, even today, it has some functions that are absent in iOS and it's very well optimized for battery life and has low power requirements to work pretty smoothly. But again... Nokia is just atrocious in handling of software and user experience.
They tried their hand at Meego, that OS showed a great potential. The fundamentals were REALLY good and much better than WP garbage. But in a typical Nokia fashion, they made mess of it too and killed the project.
So, the bottom line is that Nokia is a dinosaur and it's going extinct. It's a very badly managed and run company. They made a bad decision after a bad decision and it reflects in them losing billion after billion each quarter, not to mention the non-existent market share.
It's a phone company, that's all they do, their bread and butter, and instead of diversifying and trying their hand at multiple OSes, to at least get an idea what people want and will buy, they put all their eggs into a hydraulic press called Microsoft. They have(had) fiercely loyal customers and they don't know them at all... they should've known that Symbian users would not move to a locked down garbage like WP, but they would move to Android, cause had the functionality, openness and customization.
Fans: Nokia, we love you, give us Android.
Nokia: Well, you asked for it, you got it, here's WP.
Samsung: Here's Android superphone with even more functionality than Symbian.
Result = bye, bye Nokia.
The only good things Nokia have got going for them is: Design - still good, cameras - still good, maps - lagging in features compared to TomTom, NAVIGON and others, but it's free, offline and it's still decent.