Future iterations of RBT are expected to use AI-powered recommendation engines to suggest content based on caller behavior and preferences.

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

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)

Trends like "Green VAS" (e.g., promotional RBTs for environmental causes) are emerging to align with Gen Z consumer values. VAS Telecom: Top Services to Boost ARPU in 2025 - Telesens