Apple has started testing Douyin Pay as a new mobile payment service on its China App Store, according to mainland media reports, while purportedly leaked images of the iPhone 17 stirred up discussion on Chinese social media this week.Once tests are completed, Douyin Pay is expected to serve as the fourth payment platform on the mainland App Store, after Ant Group’s Alipay, Tencent Holdings’ WeChat Pay and state-run China UnionPay, according to reports on Tuesday by online local media IThome...