The "old Nokia"'s most prominent product nowadays are car tires, most likely, although I believe it has been made into it's own company "Nokian tyres". Regardless, they have been quite seperate from the mobile phone business for a long time
Interesting is, that the city/town of Nokia is very far from where the mobile phone business started (Salo). The phones never had anything to do with the city of Nokia, which is where the name and company originates from. It started out by Nokia buying this local TV factory/manufacturer called Salora (we still have a few of those around from the 80s, working perfectly). After a while they started venturing other mobile technologies and "Mobira" was born, which was basically Nokia as we knew it for a few decades afterwards.
I've been born and living in Salo all my life, I've also worked 4 different jobs within the Nokia campus, it's a real shame that it's only some R&D left anymore here.. the campus was really cool and big even if Salo is a small city and it doesn't really have to shame some other big corporate campuses anywhere in Finland. It was a great place to work too and see the mobile phone business from the inside
It's also funny how my Nokia N8 was manufactured just few hundred meters from my home
Sadly my Lumia 920 wasn't anymore