That's in terms of sales, not screen size. The firm says shipments of the phone-tablet hybrids will reach 318 million in 2015, more than tablet and portable PC shipments.
Emerging markets are still showing interest in new tablets, but that isn't enough to sustain IDC's prior forecast for this year.
Market researcher revises its prediction for global PC shipments in 2014, but it still expects a decline.
Apple's tablet lineup has expanded from six configurations to more than 50 in four years. Has the product lineup become too complex?
The number of personal computers worldwide is expected to drop 6 percent this year, according to a study published Tuesday.
Increasing demand for big-screen smartphones means tablet sales could be lower than expected, says research firm IDC.
A new report pegs Apple gadget as the most exciting upcoming entrant in the wearable tech race. But getting consumers to purchase and continue wearing these gadgets will prove pivotal.
The electronics giant is projecting stronger-than-expected sales this holiday even after delivering better-than-anticipated revenue in the September quarter. The only negative was another drop in iPad sales.
Microsoft's mobile OS will surge, after a fashion, amid slower growth for the smartphone industry as a whole, predicts research firm IDC.
The Mac laptop and desktop business takes over as Apple's second-biggest revenue generator, as iPad sales struggle.