Core Viewpoint - Huawei's Mate 80 series introduces a new emergency communication feature that operates without external network support, utilizing the 700MHz frequency band for enhanced coverage and reliability in disaster scenarios [3][4][11]. Group 1: Emergency Communication Features - The Mate 80 series supports two types of emergency communication: one based on 2.4GHz for general use and the other on 700MHz specifically for emergency situations [3][4]. - The 700MHz emergency communication can cover a radius of over 13 kilometers and penetrate through three walls, making it suitable for use in disasters like earthquakes and floods [4][15]. - This feature allows for point-to-point communication without relying on traditional network infrastructure, which is crucial in scenarios where conventional networks are down [6][10]. Group 2: Technical Aspects of 700MHz - The 700MHz frequency band is considered a "golden band" for wireless communication due to its strong coverage capabilities, especially in rural areas [12][14]. - Huawei's implementation of this frequency for emergency communication is notable as it is the first instance of a telecom operator directly authorizing a frequency for terminal manufacturers [17]. - The 700MHz band is part of the 5G spectrum, and while it offers excellent coverage, it has limitations in bandwidth and speed compared to higher frequency bands [14][15]. Group 3: Potential Use Cases and Concerns - The emergency communication feature can support temporary communication setups, such as using drones to establish communication links in disaster areas [21]. - There are several unanswered questions regarding the compatibility of this feature across different brands and the operational details for users in emergency situations [33][35]. - The safety and security of this decentralized communication method are also concerns, particularly regarding authentication and potential vulnerabilities [36]. Group 4: Market Implications - The introduction of this technology highlights the growing interest in private protocols among terminal manufacturers, which may offer better performance compared to public standards [36]. - The success of this feature will depend on its real-world applicability and the resolution of compatibility and security issues [36].