Jingdong self-operated is a comprehensive e-commerce platform that mainly sells products from brands and self-operated products, including SIM cards from various operators. Currently, telecom cards sold by Jingdong self-operated can be automatically converted to China Mobile or Unicom cards, but whether you can directly handle China Unicom or China Mobile cards depends on the different product conditions. It is recommended to confirm relevant information with customer service before purchasing to avoid unnecessary trouble.