A year ago, Apple Inc said it had sold 9 million of the then-new iPhone 5C and 5S models.
The iPhone is available in the US, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK It will go on sale in 20 more countries on Sept 26 and others by the end of the year.
CEO Tim Cook says demand for the phones has exceeded the company's expectations.
