I heard from my colleagues that it is much cheaper to buy iPhone 1 1 in China Telecom's Macau store. Is it true?/You don't say. Why?

It's true. It mainly consists of two factors. One is the natural price difference brought by the exchange rate, but because of the 20th anniversary of Macao's return, they launched a preferential purchase activity. As long as you go to Alipay-Overseas-Macau, you can get coupons by searching China Telecom, and they are all guaranteed by the whole network and the whole country, just like those bought in the mainland, but much cheaper. The store also supports Alipay and WeChat payment, so you don't need to change MOP to buy a mobile phone.