Earlier quoted context omitted.
Android was released a couple years after the iphone and it has defined the low end market. From the USA. A big reason why QR codes caught on in China is because everything else was really bad. In america, credit cards were 'good enough' compared to what was in china, so QR codes didn't catch on that quickly. Also because it's a wealthier nation, the typical merchant could afford the hardware required for processing…
I'm a Chinese & living China, I shopping almost only with credit cards and cash for privacy consideration. However, I don't think credit cards in China are as popular as it is in the USA. I could guess most Chinese people don't have any credit card. Chinese traditional culture encourages saving, not loaning. And taking small loans is exactly how credit cards works. So maybe that's why people here don't like credit ca…
Anyways, debit cards work just like QR pay does, just like UnionPay already does. The problem QR codes are solving is the lack of a POS terminal and stream lining the swipe. Many countries have an even better technology in NFC contact (including China, many newer UnionPay POS's include NFC, though the card must have a chip to support it). Then you could just glue your debit card to the back of your phone...(or use NFC in your phone via something like Apple or Android Pay).