Ring Back Tone (통화연곰읜) 💫

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)

The most significant recent shift is the transition to , which plays short-form video content on the caller's screen during the call setup period. Ring Back Tone (통화연결음)

V Coloring is increasingly being positioned as a mobile advertising platform for businesses. South Korea pioneered this market, with SK Telecom

The global RBT market was valued at $5 billion in 2024 and is projected to reach $6.67 billion by 2030 . KT: Tooring (투링)

The service typically costs around 3,300 KRW ($2.00) per month . Creators can also monetize their work through a dedicated marketplace, receiving payments based on user downloads. 3. Future Trends & Strategic Value

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.