World smartphone shipments topped 1B for the first time in 2013, rising 38% to 1.004B units, research firm IDC estimates.
Q4 shipments grew 24.2% to 284.4M.
Total handset volume increased 4.8% in 2014 to 1.82B units. Q4 shipments +0.9% to 488.4M.
"Among the top trends driving smartphone growth are large screen devices and low cost," IDC says. "Markets like China and India are quickly moving toward a point where sub-$150 smartphones are the majority of shipments."