The launch of new flagship smartphones such as the iPhone 6S and Samsung Galaxy S6 Edge+ will help drive sales growth in the mobile market in 2015, according to analyst house Gartner.
However the same cannot be said for the PC market, with shipments set to fall by 7.3 percent to 291 million units, despite the launch of Windows 10.
Gartner predicts that mobile phone sales will increase from 1.87bn in 2014 to 1.9bn in 2015, as buyers remain willing to upgrade their phones on an almost yearly basis.
This growth in the mobile market will continue for some time, to reach a staggering two billion shipments in 2017, accounting for the vast majority of the combined 2.5 billion device sales by that time.
However, the story is quite different in the tablet and PC market where buyers are far more willing to stick with older systems for longer, rather than upgrade, even with new Windows 10 devices now on the market.
"Replacement activity across all types of devices has decreased," said Ranjit Atwal, research director at Gartner.
"Users are extending the lifetime of their devices, or deciding not to replace their devices at all."
Adding to this is the fact that currency devaluation against the dollar is forcing vendors to raise prices to try and maintain their margins, putting off many buyers, including corporates.
"Until the end of 2015, currency devaluation and subsequent price increases will continue to restrain the replacement of premium ultramobiles [such as Microsoft's Windows 8 Intel x86 products and Apple's MacBook Air] and notebooks by businesses in particular," added Atwal.
The glimmer of hope is that by 2017 businesses will start to ramp up the adoption of Windows 10, leading to a four percent growth in the market and shipments of 303 million.
Data from Gartner also predicts that shipments of tablet devices will fall from 226 million in 2014 to 199 million in 2015, even as Apple introduces its iPad Pro 12.9in device to try and boost sales.
"The tablet market is coming under increasing pressure," said Gartner resarch analyst Annette Zimmermann.
"Users of tablets with a screen size between seven and eight inches are increasingly not replacing their devices."
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