The Apple Watch Series 3's best new feature has been mysteriously blocked in China. According to a report from The Wall Street Journal, China has cut off the Apple Watch's LTE connectivity on Sept. 28 after brief availability from China Unicom. Industry analysts claim that the suspension is probably from governmental concerns about not being able to track and confirm users of the device. AppleInsider reports: Apple issued a brief statement confirming the situation, and referring customers to China Unicom. Neither China Unicom, nor Chinese regulators have made any statement on the matter. The issue may stem from the eSIM in the Apple Watch. Devices like the iPhone have state-owned telecom company-issued SIM cards -- and the eSIM is embedded in the device by Apple. "The eSIM (system) isn't mature enough yet in China," one analyst said. "The government still needs to figure out how they can control the eSIM." The LTE version of the Apple Watch had only a trial certificate to operate on the Chinese LTE network. An analyst who asked not to be identified expects that Ministry of Industry and Information Technology may take months to figure out how the government will deal with the eSIM, and issue a formal certificate for operation.