Apple recently launched an iPhone Air model that exclusively supports eSIM cards, sparking a wave of SIM-free adoption. China's three major carriers claim they have the necessary technology but are still awaiting further notification from relevant authorities. Independent telecom analyst Fu Liang believes this model may prove to be a "useless" product, and its appeal remains to be seen. The attitude of leading domestic mobile phone manufacturers will determine the success of eSIM adoption, with OPPO expected to release a related phone by the end of the year.