Group 1 - The core update of ColorOS 15 includes deep optimization of the Xiao Bu assistant, new smart screen reading, screen content analysis, and deep categorization of album content [1] - The "No Network Chat" feature has been significantly upgraded to support sending text messages, voice messages, and images, expanding its use cases in outdoor environments [3][6] - OPPO's MeshTalk technology enables decentralized communication without relying on traditional network infrastructure, allowing communication within a 3-kilometer range [6][11] Group 2 - MeshTalk operates on a proprietary protocol that requires specific communication chips in devices, limiting its use to compatible devices [8][11] - The technology is not intended to replace network communication but serves as a supplementary method in scenarios with weak signals or during disasters [11][12] - Future potential for MeshTalk includes multi-device connectivity and enhanced privacy, with the possibility of supporting more complex information types beyond images [15][16]