I've got an I LOVE YOU virus once on a Panasonic X700 fliphone. And, since it was an already old phone by that time, no one had the right tools to fix it anymore.

That phone was just like a Nokia, btw. Exact same Symbian OS, just with different media files and branding. (or at least, it looked like, so much so it hurt my young brain at the time)

There were photos of F1 cars on it by default. And a mini golf game that was awesome.

I was so sad when that phone got bricked. I don't even tell you guys how I got that virus since it's so embarrassing 😅

Also I almost got a ransomware on a freshly installed PC. I was lucky enough to notice something was wrong and I was able to stop it. Though, lots of folders have been infected (files have been created - the message that should have been displayed inside the virus's windows I assume) and some files did get encrypted - but not deleted...