Apple’s debut of its first eSIM-only ultra-slim handset, the iPhone Air, on Wednesday has turned the spotlight on China’s telecom operators and their eSIM strategies. China Unicom has emerged as the first carrier to support the new device, while China Mobile and China Telecom said they are fast-tracking regulatory approvals and system integration to roll out the service. Details: China’s three major mobile operators, China Mobile, China Unicom, and China Telecom, are the country’s main providers of mobile, broadband, and data services. According to Apple’s website, the iPhone Air currently supports eSIM activation in mainland China only through China Unicom. China Mobile said it already supports eSIM mobile services and will provide further details on service availability in the near future.