Revenue from the iPhone, responsible for most of the firm's profits, fell 15% in its latest financial quarter.

Overall the firm's revenue was down 5% from a year ago to about $84.3bn (£64.5bn).

The slowdown had been expected after the tech giant warned investors earlier this month that revenue would be about $84bn, lower than expected.

The firm had blamed the issues partly on an economic slowdown in China.

But chief executive Tim Cook said customers were also struggling with the firm's high prices.

He said a strong dollar, which makes its products comparatively more expensive, had hurt its sales in emerging markets.

At the moment, according to Apple's official website, an iPhone Xs with a 5.8in display costs from $999 (£763) in the US compared with £999 in the UK and 8,699 Yuan (£989) in China.

Mr Cook said the tech giant had started this month to re-price its phones to shield customers from the impact of currency fluctuations.

"What we have done in January in some locations and [for] some products is essentially absorb part or all of the foreign currency move as compared to last year," he said.

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