Ring Back Tone (RBT) Service Report The Ring Back Tone (RBT) service, known as (Tong-hwa-yeon-gyeol-eum) or Coloring (컬러링) in South Korea, has evolved from a simple audio personalization tool into a sophisticated multi-media value-added service (VAS). 1. Market Overview
As of 2021, the service offered approximately 4,000 types of videos , including K-pop idol content and user-created videos. Ring Back Tone (통화연결음)
Future iterations of RBT are expected to use AI-powered recommendation engines to suggest content based on caller behavior and preferences. Ring Back Tone (RBT) Service Report The Ring
V Coloring is increasingly being positioned as a mobile advertising platform for businesses. Future iterations of RBT are expected to use
South Korea pioneered this market, with SK Telecom (SKT) launching the world’s first RBT service, "Coloring," in March 2002 . Within 10 months, it achieved a 35% subscriber penetration rate. Korean Carrier Variants: SK Telecom: Coloring (컬러링). KT: Tooring (투링). LG Uplus: Feeling (필링). 2. Service Evolution: From Audio to Video (V Coloring)
While SKT launched V Coloring in September 2020, all three major Korean carriers (SKT, KT, LG U+) began offering it as a unified joint service in May 2021.