Another quarter, another record sale figure for the iPhone from Apple. But iPad sales weren't so hot.Perhaps everyone has been waiting for the new iPad air and iPad mini, but sales were pretty flat for the iPad, even if it did sell a mind-boggling 14.1 million units. Different story for the iPhone though, which sold 33.8 million, up 26% from the same quarter last year. Two new models have obviously boosted that figure considerably, although the figures only show one week of sales for the iPhone 5c and iPhone 5s.Apple earned $7.5 billion overall, with a revenue of $37.5 billion. It's a strong performance and one that should be bettered with the next quarter including the run-up to Christmas.However, those figures could be hindered by a stock shortage. During an earnings call, Apple CEO Tim Cook was asked about availability of the iPad mini with Retina display. He confirmed it would start shipping at the back end of November, but added that it's 'unclear whether we'll have enough for the quarter or not.' He said Apple knew how much stock it had available, but couldn't judge demand until the product actually ships.With those flat sales, Apple would have been hoping to have picked up with the new iPad range this quarter, especially with so much competition when it comes to selling tablets. You suspect Apple is doing all it can to fill the shelves, but if one of your family wants one for the festive season, you might have to join a queue to avoid disappointment.