Apple reported a jump in sales in the three months to September.The tech giant’s revenue was $51.5bn, up 22% compared with the same period last year.

It sold over 48 million iPhones in the period, which it said were “record fourth quarter sales”, although the figure did miss analysts’ expectations.

It also reported a net income of $11.1bn for the period, adding that 2015 was its most successful ever year.

“The growth was fuelled by record fourth quarter sales of iPhone, the expanded availability of Apple Watch, and all-time records for Mac sales and revenue from services” it said in the earnings release.

Dave Lee, North America technology reporter, San Francisco

2015 has been Apple’s most successful year ever. Revenue is up 22% on 2014, mostly thanks to the continued success of the iPhone.

There are few surprises in these latest results – but a few interesting tidbits caught my eye.

Firstly, chief executive Tim Cook has said that as much as 30% of iPhone buyers are Google Android converts, the highest ever conversion rate.

Secondly, while it still feels like Apple sometimes favours its US customers with new features, it’s the international sales that are really giving it gusto: 62% of revenue was generated outside of the US this quarter. China accounts for a huge chunk of that – $12.52bn sales in the past three months, almost double what it took in from the country this time last year.

The iPad is still flagging, but that range will be given a shot in the arm by the upcoming iPad Pro.

Oh, and we still don’t know how many Apple Watches were sold in this quarter. Analysts put it at around 3.5 million. Still a tiny product line in Apple’s terms, but by far and away the most successful smartwatch on the market.