South Korean electronics giant says it shipped 14.5 million smartphones in the quarter, a 20 percent year-over-year increase.
The number of personal computers worldwide is expected to drop 6 percent this year, according to a study published Tuesday.
Despite rapid gains in recent years, consumer appetite for tablets seems to be shrinking, thanks to demand for bigger smartphones.
The larger iPad is out-shipping the iPad Mini. That means the popularity early last year of the Mini has not been sustained vis-a-vis the 9.7-inch iPad.
Samsung, Lenovo, and other major players saw much higher growth in shipments, according to IDC's Worldwide Quarterly Mobile Phone Tracker.
The data released by analyst firm Mirae Asset Securities claims that the Korean manufacturer will sell 15 million units in the April-June period.
While that's only a small dent in the overall PC market, which counts annual shipments in the hundreds of millions, it's making waves in key segments like education.
Shipments of PCs, tablets, and mobile phones combined will climb by 7 percent in 2014, predicts Gartner, though PCs will be on the losing end of the deal.
Although shipments worldwide were slightly higher than expected last year, IDC's forecast shows things taking a turn for the worse.
With nearly 80 percent of the world market, Google's Android dominated 2013. Meanwhile, Apple's iOS lost market share and Microsoft's Windows Phone gained.