First weekend sales of the new iPhone 5s and 5c models topped nine million, an Apple record, but the Cupertino giant remained tight-lipped about how many of each device were sold.

“The demand for the new iPhones has been incredible, and while we’ve sold out of our initial supply of iPhone 5s, stores continue to receive new iPhone shipments regularly,” said Apple chief executive Tim Cook.

By way of comparison, first weekend sales of last year’s iPhone 5 hit five million units, up from four million for iPhone 4S.

The iPhone 5c is Apple’s first venture into the smartphone mid-market, carrying a US price tag of $99 (16GB) and $199 (32GB) on two-year contracts. The iPhone 5s has a suggested retail price of $199 (16GB), $299 (32GB) and $399 (64GB).

According to Reuters, an unnamed US operator said demand for the iPhone 5c had not been “overwhelming”.

Both the iPhone 5s and iPhone 5c are available in the US, Australia, Canada, China, France, Germany, Hong Kong, Japan, Puerto Rico, Singapore and the UK.

Apple further reports that more than 200 million iOS devices are now running the new iOS 7 software, “making it the fastest software upgrade in history”.

Analyst Benedict Evans tweeted that 200 million iOS 7 upgrades represents nearly half of Apple’s total installed iPhone base. And it compares very favourably with rival Google’s latest Android 4.3 (Jellybean) OS platform, which Evans said is at 37 per cent of the total Android base 13 months after launch.

Apple’s latest sales boost has caused it to issue revised guidance on its forthcoming quarter. In a SEC filing today the firm noted: “Apple expects total company revenue for the fourth fiscal quarter to be near the high end of the previously provided range of $34 billion to $37 billion, and  expects gross margin to be near the high end of the previously provided range of 36 per cent to 37 per cent.”

Less encouragingly for Apple, a group of German hackers known as the Chaos Computer Club (CCC) claim they have already successfully cracked Touch ID, the fingerprint sensor used to secure the iPhone 5s.