Ai Feng brand mobile phone, also known as Apple's official second mobile phone, is the most stable of many types of Apple's second mobile phone. Ai Feng sent orders through the old-for-new channels of Apple official website or Apple offline direct stores, with only two sources.

Aifengpai, a wholly-owned subsidiary of Foxconn, is the only Apple second-hand equipment recycling and seller in China. Aifeng School is backed by Foxconn's maintenance technology, so that these second-hand equipment recovered through offline direct stores and Apple official website can be put on the market again after a series of tests.