China Unicom (CHU.NYSE, 0762.HKG) announced that it has taken reservations for over 100,000 units of Apple’s (AAPL.NASDAQ) iPhone 5C and 5S models in the week since the products’ debut, Bloomberg reported. China Unicom, which announced the volume of registrations on its official Sina Weibo microblog account, hasn’t disclosed pricing plans for the handsets which are due to go on sale on September 20. Apple unveiled the 5S and 5C models for the networks of China Unicom and China Telecom (CHA.NYSE, 0728.HKG) last week as it tries to stem a declining share in the world’s largest mobile-phone market.