While the overall growth will continue to slow, many markets, especially India, will experience robust growth in 2015 and beyond with global shipment volumes forecast to reach 1.9 billion units annually by 2019, IDC said.
According to IDC, 1.44 billion smartphones are expected to be shipped globally in 2015.
"Smartphone shipments are expected to grow 11.3 per cent in 2015, which is down from 27.6 per cent in 2014... This to be the first year in which China's smartphone growth, forecast to be 2.5 per cent in 2015, will be slower than the worldwide market," IDC said.
"Smartphone volume still has a lot of opportunity in the years to come, but two fundamental segments driving recent years' growth are starting to slow," IDC Program Director Ryan Reith said.
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As Chinese OEMs (original equipment makers) shift their focus from the domestic market to the next high-growth markets, they will face a number of challenges, including competition from 'local' brands, he added.
As per IDC estimates, China's share of smartphone shipment is expected to come down to 23.88 per cent in 2019 from 29.73 million.
However, India's share is estimated to grow from 7.61 per cent in 2015 to 13.29 per cent in 2019, IDC said.