Question: did they really film in Austria or the scenes are just CG?
They really filmed in Austria. You can watch the behind video of Ep 9-10. They traveled there to film the scenes. Also some fans met Jinyoung in Hallstatt while he was filming for this scene.
Yes, I have read the whole novel and it's a happy ending. I don't know why they spread these kinds of rumors. Maybe they want to ruin the hype of the drama.
https://kisskh.at/discussions/the-number-you-have-dialed/132368-novel-translation
You can also read it from here:
https://moonlightnovel.com/novels/when-the-phone-rings/
If you want to watch the drama online:
https://kisskh.co/
If you want to download the drama and watch it offline:
https://dramaday.me/when-the-phone-rings/
I hope we'll get a passionate one next episode 🤩