I've lived in Korea, my experience was you gave out phone numbers when meeting new people, KakaoTalk automatically scans new contacts and adds them to your KakaoTalk contacts and all subsequent texting and photo sharing was through KakaoTalk.
I only texted one person regularly while I lived there, my boss; my boss had a KakaoTalk account but didn't use it (with me at least).
I still use it, it's a very good messaging application with some pretty well implemented features (and excellent custom emojis!).
I only texted one person regularly while I lived there, my boss; my boss had a KakaoTalk account but didn't use it (with me at least).
I still use it, it's a very good messaging application with some pretty well implemented features (and excellent custom emojis!).