This Recommendation describes the importance of improving the durability of mobile telecommunication terminals at different stages of the product life cycle. Durability assessment method of mobile telecommunication terminals is given, including specific suggestions for improving durability in different evaluation dimensions. Finally, through the development of product durability evaluation indicators and grading, it provides specific guidance references for users to assess the durability of mobile telecommunication terminals using this recommendation. The EN 45552 (2020) and EN 45553 (2020) standards serve as comprehensive methodologies for assessing the durability and manufacturing capability of energy-related products, respectively. These standards have a broader scope and are considered universal benchmarks. On the other hand, [b-ITU-T L.1023] focuses on an assessment method for circularity scoring of information and communication technology (ICT) goods, employing different assessment dimensions compared to this recommendation. Based on the above research, this Recommendation focuses on evaluating the durability of mobile telecommunication terminal products throughout their entire life cycle. It combines the characteristics of mobile terminal products and methods to improve durability during product design, production, use, and recycling. It also evaluates the durability of mobile telecommunication terminal products based on environmental adaptability, maintenance and repair of the entire machine and spare parts, recycling and reuse, system management, data security, and manufacturer operation. This evaluation content is more detailed than general international standards and differs from other standards in its evaluation dimensions and methods to meet the industry's specific green development needs.