The eSIM mobile phone service has officially received regulatory approval. On October 13, China Telecom secured clearance from the Ministry of Industry and Information Technology to initiate commercial trials for eSIM-enabled mobile phones. Similarly, China Mobile and China Unicom were also granted approval to conduct commercial trials for this innovative service. Prior to this, Apple unveiled the iPhone Air, a device that exclusively supports eSIM technology. Originally slated for pre-sale on September 12, the model did not make its anticipated debut. Subsequently, Apple's official website was updated with information indicating that the three major telecom operators would offer eSIM support. Presently, the three operators are only accepting reservations for the eSIM mobile phone service specifically for the iPhone Air. Customers are required to acquire the phone and then visit a physical business outlet to finalize the setup before they can truly utilize the service, as online activation is not yet an option. In addition to the iPhone Air, domestic mobile phone makers such as Huawei, OPPO, and Vivo are also set to sequentially launch eSIM-compatible mobile phones. Moreover, the article delves into the benefits and commercial applications of eSIM cards.