eSIM, also known as eUICC, is short for Embedded UICC. Considering the generalized SIM card, the concept of eUICC is generally equivalent to eSIM, that is, embedded SIM card.

eSIM card can adapt to more severe environment, strict physical and electrical characteristics (such as ambient temperature, humidity and etc.) requirements, more frequent read and write operations, with smaller size, longer data retention time, and more wear-resistant physical connection , lower power consumption, safer remote management mechanism and more flexible upgrade technology.。

The eSIM contract management platform is based on "user contract management", and remotely configures and manages the user data in the smart card through the mobile communication network, providing flexible upgrade of the IoT smart card to meet the remote configuration, remote activation, and air replacement of users in the IoT business. The needs of identity provide safe and reliable business services and operation management guarantee for IoT users