Apple's revenue has fallen for the first time since 2003, as the company reported an iPhone sales drop for the first time in the device's history.
The technology giant reported revenue of 50.6 billion US dollars (£34.7 billion) for the first three months of this year, a drop of 13% on the same period last year.
Meanwhile, iPhone sales fell for the first time since the device was launched in 2007, dropping from 61 million to 51 million.
Industry experts have suggested the decline in iPhone sales - which makes up more than half of Apple's total revenue and is therefore crucial to their success - is down to an increasingly saturated smartphone market as competition increases from established rivals such as Samsung, HTC and Google, but also emerging Chinese firms such as Huawei.
To battle this, the firm updated their smaller 4in iPhone, last seen as the iPhone 5s in 2013, by launching the iPhone SE last month, aiming the device at emerging markets such as China and India.
Apple CEO Tim Cook said of the latest results: "Our team executed extremely well in the face of strong macroeconomic headwinds.
"We are very happy with the continued strong growth in revenue from Services, thanks to the incredible strength of the Apple ecosystem and our growing base of over one billion active devices."
The other flagship products in Apple's line-up - the iPad and Mac computers - both also recorded a decline in their sales for the first three months of the year.