According to data from the China Recycling Association, out of the 600 million to 700 million discarded mobile phones generated annually in China, the amount of recycled and processed phones is 200 million to 300 million. As the update cycle of mobile phones gradually shortens, the amount of scrapped phones is increasing. According to industry data, during the 14th Five Year Plan period, the total number of idle mobile phones in China will reach 6 billion, and the hidden value of second-hand mobile phones will exceed 600 billion yuan. The Action Plan for Promoting Large scale Equipment Renewal and Consumer Goods Trade in "issued by the State Council proposes to" support the circulation and trading of second-hand goods ". Nowadays, many consumers trade idle phones through second-hand platforms or offline stores to turn "waste" into treasure and recycle old phones. Overall, the standardization, normalization, and facilitation level of the current circulation of old mobile phones is constantly improving. However, at the same time, problems such as data leakage risks, opaque prices, incomplete grading and evaluation systems, and insufficient after-sales support still exist, becoming pain points and difficulties in the circulation of old phones. How to make the circulation of second-hand mobile phones smoother and transactions more reassuring? Choose a formal platform to ensure reliable transactions. At present, many consumers choose the Internet platform to trade old mobile phones. The relevant person in charge of the China Consumers Association stated that if consumers conduct transactions through platforms or networks, it is recommended to choose legitimate, well-known, and relatively complete pre-sales, in sales, after-sales, and refund service processes for transactions. These platforms usually have strict item review and inspection mechanisms, provide transaction security services, and have strong technical capabilities to ensure the safety and reliability of transactions. In the pre-sales and in sales stages, legitimate platforms have relatively complete online and offline recycling networks, which facilitate consumers to quickly and efficiently turn their phones around. Chen Jufeng, chief technical officer of Xianyu, introduced that, relying on the "Internet plus+recycling" model, Xianyu provides mobile digital users with various forms of services such as door-to-door recycling, store recycling, mail recycling, etc., of which door-to-door recycling covers 100 cities, enabling face-to-face quality inspection and collection. At the same time, Xianyu has also opened offline recycling stores to provide more convenient offline recycling services, and uses artificial intelligence algorithms to improve store operation efficiency. Through intelligent valuation and publishing of large models, it shortens the time for users to queue and products to be listed, and improves the accuracy of product valuation. Furthermore, legitimate platforms have complete and clear quality inspection, grading standards, and processes for second-hand mobile phones, ensuring that the platform sets fair prices based on the different conditions of the products. In addition, legitimate platforms will have detailed display pages for product information, honestly informing consumers of the complete situation and pricing of the products. Relevant customer service personnel will also respond quickly to consumer needs and inquiries. The second-hand recycling industry is a natural trust economy, and only high standards can lead to high quality Huang Wei, CEO of Zhuanzhuan Group, introduced that the company has developed a set of second-hand mobile phone recycling identification standards and established 404 processes. After quality inspection, the phone will be classified and graded based on its functionality, age, condition, etc., such as 99% new, 95% new, 90% new, 80% new, etc., and finally relisted. In the after-sales and refund process, if consumers are not satisfied with the transaction or if there are problems or defects with the product, they can negotiate with a legitimate platform for a return or exchange or quick repair. Strengthening technological empowerment and ensuring data information security. Multiple consumer associations across the country have conducted research and found that data information security has become the biggest factor affecting users' disposal of used mobile phones. Concerns about personal information leakage often lead to many people being "afraid to sell" their old phones. The relevant person in charge of the China Consumers' Association suggested that consumers should choose circulation platforms and enterprises with good ability to clear old phone data when circulating old phones, in order to ensure information security. Tang Yanju, Secretary General of the China Association for Recycling and Utilization of Renewable Resources, stated that currently, many leading platforms and enterprises are making great efforts to protect privacy. Relevant business entities continue to strengthen technological innovation, using deep cleaning software to repeatedly clear device data and restore recycled old machines to their factory settings. This not only protects the privacy of the original owner user, but also strives to ensure that the device reaches a data clean state before sale, ensuring that the user's private data cannot be recovered. Wang Yongliang, Executive President of Wanwu Xinsheng (Love Recycling) Group, introduced that in order to protect user data security, the company not only conducts face-to-face privacy data cleaning for users, but also deeply cleans old mobile phones through self-developed data cleaning technology in the backend operation center. Afterwards, users will receive a privacy clearance report, which better protects consumers' right to know and fair trade rights. (New Society)